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Finding the Fourth Proportional to 69,092.71, 103,472.97 and 39,420.58

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Solution

The fourth proportional to 69,092.71, 103,472.97 and 39,420.58 is: 59,036.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,092.71 : 103,472.97 = 39,420.58 : x
  2. Step 2: Convert to fraction form
    69,092.71/103,472.97 = 39,420.58/x
  3. Step 3: Cross multiply
    69,092.71x = 103,472.97 × 39,420.58
  4. Step 4: Simplify right side
    69,092.71x = 4,078,964,491.72
  5. Step 5: Solve for x
    x = 4,078,964,491.72/69,092.71
  6. Step 6: Final answer
    x = 59,036.11

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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.