Home / 67,187.90-100,778.20-20,437.13

Finding the Fourth Proportional to 67,187.90, 100,778.20 and 20,437.13

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Solution

The fourth proportional to 67,187.90, 100,778.20 and 20,437.13 is: 30,654.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,187.90 : 100,778.20 = 20,437.13 : x
  2. Step 2: Convert to fraction form
    67,187.90/100,778.20 = 20,437.13/x
  3. Step 3: Cross multiply
    67,187.90x = 100,778.20 × 20,437.13
  4. Step 4: Simplify right side
    67,187.90x = 2,059,616,619.58
  5. Step 5: Solve for x
    x = 2,059,616,619.58/67,187.90
  6. Step 6: Final answer
    x = 30,654.58

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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.