Home / 70,429,511.70-105,644,267.55-18,614,014.20

Finding the Fourth Proportional to 70,429,511.70, 105,644,267.55 and 18,614,014.20

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Solution

The fourth proportional to 70,429,511.70, 105,644,267.55 and 18,614,014.20 is: 27,921,021.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,429,511.70 : 105,644,267.55 = 18,614,014.20 : x
  2. Step 2: Convert to fraction form
    70,429,511.70/105,644,267.55 = 18,614,014.20/x
  3. Step 3: Cross multiply
    70,429,511.70x = 105,644,267.55 × 18,614,014.20
  4. Step 4: Simplify right side
    70,429,511.70x = 1,966,463,896,324,299
  5. Step 5: Solve for x
    x = 1,966,463,896,324,299/70,429,511.70
  6. Step 6: Final answer
    x = 27,921,021.30

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.