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Finding the Fourth Proportional to 81,062.50, 121,594.29 and 25,658.50

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Solution

The fourth proportional to 81,062.50, 121,594.29 and 25,658.50 is: 38,487.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,062.50 : 121,594.29 = 25,658.50 : x
  2. Step 2: Convert to fraction form
    81,062.50/121,594.29 = 25,658.50/x
  3. Step 3: Cross multiply
    81,062.50x = 121,594.29 × 25,658.50
  4. Step 4: Simplify right side
    81,062.50x = 3,119,927,089.97
  5. Step 5: Solve for x
    x = 3,119,927,089.97/81,062.50
  6. Step 6: Final answer
    x = 38,487.92

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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.