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Finding the Fourth Proportional to 71,740.59, 98,943.05 and 63,680.13

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Solution

The fourth proportional to 71,740.59, 98,943.05 and 63,680.13 is: 87,826.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,740.59 : 98,943.05 = 63,680.13 : x
  2. Step 2: Convert to fraction form
    71,740.59/98,943.05 = 63,680.13/x
  3. Step 3: Cross multiply
    71,740.59x = 98,943.05 × 63,680.13
  4. Step 4: Simplify right side
    71,740.59x = 6,300,706,286.60
  5. Step 5: Solve for x
    x = 6,300,706,286.60/71,740.59
  6. Step 6: Final answer
    x = 87,826.24

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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.