Home / 83,691.04-125,429.82-39,219.70

Finding the Fourth Proportional to 83,691.04, 125,429.82 and 39,219.70

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Solution

The fourth proportional to 83,691.04, 125,429.82 and 39,219.70 is: 58,779.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,691.04 : 125,429.82 = 39,219.70 : x
  2. Step 2: Convert to fraction form
    83,691.04/125,429.82 = 39,219.70/x
  3. Step 3: Cross multiply
    83,691.04x = 125,429.82 × 39,219.70
  4. Step 4: Simplify right side
    83,691.04x = 4,919,319,911.45
  5. Step 5: Solve for x
    x = 4,919,319,911.45/83,691.04
  6. Step 6: Final answer
    x = 58,779.53

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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.