Home / 52,129.20-78,251.40-28,801.20

Finding the Fourth Proportional to 52,129.20, 78,251.40 and 28,801.20

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Solution

The fourth proportional to 52,129.20, 78,251.40 and 28,801.20 is: 43,233.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,129.20 : 78,251.40 = 28,801.20 : x
  2. Step 2: Convert to fraction form
    52,129.20/78,251.40 = 28,801.20/x
  3. Step 3: Cross multiply
    52,129.20x = 78,251.40 × 28,801.20
  4. Step 4: Simplify right side
    52,129.20x = 2,253,734,221.68
  5. Step 5: Solve for x
    x = 2,253,734,221.68/52,129.20
  6. Step 6: Final answer
    x = 43,233.62

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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.