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Finding the Fourth Proportional to 125,250.80, 187,876.58 and 30,481

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Solution

The fourth proportional to 125,250.80, 187,876.58 and 30,481 is: 45,721.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,250.80 : 187,876.58 = 30,481 : x
  2. Step 2: Convert to fraction form
    125,250.80/187,876.58 = 30,481/x
  3. Step 3: Cross multiply
    125,250.80x = 187,876.58 × 30,481
  4. Step 4: Simplify right side
    125,250.80x = 5,726,666,034.98
  5. Step 5: Solve for x
    x = 5,726,666,034.98/125,250.80
  6. Step 6: Final answer
    x = 45,721.59

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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.