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Finding the Fourth Proportional to 67,931.62, 93,713.16 and 40,694.56

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Solution

The fourth proportional to 67,931.62, 93,713.16 and 40,694.56 is: 56,139.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,931.62 : 93,713.16 = 40,694.56 : x
  2. Step 2: Convert to fraction form
    67,931.62/93,713.16 = 40,694.56/x
  3. Step 3: Cross multiply
    67,931.62x = 93,713.16 × 40,694.56
  4. Step 4: Simplify right side
    67,931.62x = 3,813,615,812.41
  5. Step 5: Solve for x
    x = 3,813,615,812.41/67,931.62
  6. Step 6: Final answer
    x = 56,139.04

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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.