Home / 69,146,412.40-103,724,867.40-20,620,478.80

Finding the Fourth Proportional to 69,146,412.40, 103,724,867.40 and 20,620,478.80

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Solution

The fourth proportional to 69,146,412.40, 103,724,867.40 and 20,620,478.80 is: 30,932,283.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,146,412.40 : 103,724,867.40 = 20,620,478.80 : x
  2. Step 2: Convert to fraction form
    69,146,412.40/103,724,867.40 = 20,620,478.80/x
  3. Step 3: Cross multiply
    69,146,412.40x = 103,724,867.40 × 20,620,478.80
  4. Step 4: Simplify right side
    69,146,412.40x = 2,138,856,429,254,511.25
  5. Step 5: Solve for x
    x = 2,138,856,429,254,511.25/69,146,412.40
  6. Step 6: Final answer
    x = 30,932,283.47

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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.