Home / 81,587.33-122,351.10-28,265.54

Finding the Fourth Proportional to 81,587.33, 122,351.10 and 28,265.54

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Solution

The fourth proportional to 81,587.33, 122,351.10 and 28,265.54 is: 42,387.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,587.33 : 122,351.10 = 28,265.54 : x
  2. Step 2: Convert to fraction form
    81,587.33/122,351.10 = 28,265.54/x
  3. Step 3: Cross multiply
    81,587.33x = 122,351.10 × 28,265.54
  4. Step 4: Simplify right side
    81,587.33x = 3,458,319,402.88
  5. Step 5: Solve for x
    x = 3,458,319,402.88/81,587.33
  6. Step 6: Final answer
    x = 42,387.95

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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.