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Finding the Fourth Proportional to 69,172.71, 103,592.73 and 39,500.61

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Solution

The fourth proportional to 69,172.71, 103,592.73 and 39,500.61 is: 59,155.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,172.71 : 103,592.73 = 39,500.61 : x
  2. Step 2: Convert to fraction form
    69,172.71/103,592.73 = 39,500.61/x
  3. Step 3: Cross multiply
    69,172.71x = 103,592.73 × 39,500.61
  4. Step 4: Simplify right side
    69,172.71x = 4,091,976,026.57
  5. Step 5: Solve for x
    x = 4,091,976,026.57/69,172.71
  6. Step 6: Final answer
    x = 59,155.93

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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.