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Finding the Fourth Proportional to 79,379.56, 109,545.21 and 43,572.90

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Solution

The fourth proportional to 79,379.56, 109,545.21 and 43,572.90 is: 60,131.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,379.56 : 109,545.21 = 43,572.90 : x
  2. Step 2: Convert to fraction form
    79,379.56/109,545.21 = 43,572.90/x
  3. Step 3: Cross multiply
    79,379.56x = 109,545.21 × 43,572.90
  4. Step 4: Simplify right side
    79,379.56x = 4,773,202,891.60
  5. Step 5: Solve for x
    x = 4,773,202,891.60/79,379.56
  6. Step 6: Final answer
    x = 60,131.38

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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.