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Finding the Fourth Proportional to 68,506.60, 102,593.80 and 47,387.38

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Solution

The fourth proportional to 68,506.60, 102,593.80 and 47,387.38 is: 70,966.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,506.60 : 102,593.80 = 47,387.38 : x
  2. Step 2: Convert to fraction form
    68,506.60/102,593.80 = 47,387.38/x
  3. Step 3: Cross multiply
    68,506.60x = 102,593.80 × 47,387.38
  4. Step 4: Simplify right side
    68,506.60x = 4,861,651,386.24
  5. Step 5: Solve for x
    x = 4,861,651,386.24/68,506.60
  6. Step 6: Final answer
    x = 70,966.18

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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.