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Finding the Fourth Proportional to 71,160.32, 106,091.86 and 69,342.68

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Solution

The fourth proportional to 71,160.32, 106,091.86 and 69,342.68 is: 103,381.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,160.32 : 106,091.86 = 69,342.68 : x
  2. Step 2: Convert to fraction form
    71,160.32/106,091.86 = 69,342.68/x
  3. Step 3: Cross multiply
    71,160.32x = 106,091.86 × 69,342.68
  4. Step 4: Simplify right side
    71,160.32x = 7,356,693,898.58
  5. Step 5: Solve for x
    x = 7,356,693,898.58/71,160.32
  6. Step 6: Final answer
    x = 103,381.97

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.