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Finding the Fourth Proportional to 86,470.56, 129,310.56 and 62,857.44

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Solution

The fourth proportional to 86,470.56, 129,310.56 and 62,857.44 is: 93,998.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,470.56 : 129,310.56 = 62,857.44 : x
  2. Step 2: Convert to fraction form
    86,470.56/129,310.56 = 62,857.44/x
  3. Step 3: Cross multiply
    86,470.56x = 129,310.56 × 62,857.44
  4. Step 4: Simplify right side
    86,470.56x = 8,128,130,766.57
  5. Step 5: Solve for x
    x = 8,128,130,766.57/86,470.56
  6. Step 6: Final answer
    x = 93,998.82

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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.