Home / 81,177.50-121,768.34-38,472.96

Finding the Fourth Proportional to 81,177.50, 121,768.34 and 38,472.96

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Solution

The fourth proportional to 81,177.50, 121,768.34 and 38,472.96 is: 57,710.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,177.50 : 121,768.34 = 38,472.96 : x
  2. Step 2: Convert to fraction form
    81,177.50/121,768.34 = 38,472.96/x
  3. Step 3: Cross multiply
    81,177.50x = 121,768.34 × 38,472.96
  4. Step 4: Simplify right side
    81,177.50x = 4,684,788,281.72
  5. Step 5: Solve for x
    x = 4,684,788,281.72/81,177.50
  6. Step 6: Final answer
    x = 57,710.43

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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.