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Finding the Fourth Proportional to 57,550.98, 86,289.54 and 39,731.70

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Solution

The fourth proportional to 57,550.98, 86,289.54 and 39,731.70 is: 59,572.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,550.98 : 86,289.54 = 39,731.70 : x
  2. Step 2: Convert to fraction form
    57,550.98/86,289.54 = 39,731.70/x
  3. Step 3: Cross multiply
    57,550.98x = 86,289.54 × 39,731.70
  4. Step 4: Simplify right side
    57,550.98x = 3,428,430,116.42
  5. Step 5: Solve for x
    x = 3,428,430,116.42/57,550.98
  6. Step 6: Final answer
    x = 59,572.05

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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.