Home / 78,022.67-107,781.50-62,086.73

Finding the Fourth Proportional to 78,022.67, 107,781.50 and 62,086.73

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Solution

The fourth proportional to 78,022.67, 107,781.50 and 62,086.73 is: 85,767.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,022.67 : 107,781.50 = 62,086.73 : x
  2. Step 2: Convert to fraction form
    78,022.67/107,781.50 = 62,086.73/x
  3. Step 3: Cross multiply
    78,022.67x = 107,781.50 × 62,086.73
  4. Step 4: Simplify right side
    78,022.67x = 6,691,800,505.80
  5. Step 5: Solve for x
    x = 6,691,800,505.80/78,022.67
  6. Step 6: Final answer
    x = 85,767.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.