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Finding the Fourth Proportional to 71,359.99, 106,869.46 and 39,691.39

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Solution

The fourth proportional to 71,359.99, 106,869.46 and 39,691.39 is: 59,442.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,359.99 : 106,869.46 = 39,691.39 : x
  2. Step 2: Convert to fraction form
    71,359.99/106,869.46 = 39,691.39/x
  3. Step 3: Cross multiply
    71,359.99x = 106,869.46 × 39,691.39
  4. Step 4: Simplify right side
    71,359.99x = 4,241,796,683.15
  5. Step 5: Solve for x
    x = 4,241,796,683.15/71,359.99
  6. Step 6: Final answer
    x = 59,442.23

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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.