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Finding the Fourth Proportional to 62,687.80, 86,509.38 and 34,393.96

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Solution

The fourth proportional to 62,687.80, 86,509.38 and 34,393.96 is: 47,463.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,687.80 : 86,509.38 = 34,393.96 : x
  2. Step 2: Convert to fraction form
    62,687.80/86,509.38 = 34,393.96/x
  3. Step 3: Cross multiply
    62,687.80x = 86,509.38 × 34,393.96
  4. Step 4: Simplify right side
    62,687.80x = 2,975,400,155.34
  5. Step 5: Solve for x
    x = 2,975,400,155.34/62,687.80
  6. Step 6: Final answer
    x = 47,463.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.