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Finding the Fourth Proportional to 67,713.76, 93,414.18 and 39,403

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Solution

The fourth proportional to 67,713.76, 93,414.18 and 39,403 is: 54,358.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,713.76 : 93,414.18 = 39,403 : x
  2. Step 2: Convert to fraction form
    67,713.76/93,414.18 = 39,403/x
  3. Step 3: Cross multiply
    67,713.76x = 93,414.18 × 39,403
  4. Step 4: Simplify right side
    67,713.76x = 3,680,798,934.54
  5. Step 5: Solve for x
    x = 3,680,798,934.54/67,713.76
  6. Step 6: Final answer
    x = 54,358.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.