Home / 99,711.75-149,666.15-43,590.59

Finding the Fourth Proportional to 99,711.75, 149,666.15 and 43,590.59

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Solution

The fourth proportional to 99,711.75, 149,666.15 and 43,590.59 is: 65,428.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,711.75 : 149,666.15 = 43,590.59 : x
  2. Step 2: Convert to fraction form
    99,711.75/149,666.15 = 43,590.59/x
  3. Step 3: Cross multiply
    99,711.75x = 149,666.15 × 43,590.59
  4. Step 4: Simplify right side
    99,711.75x = 6,524,035,781.53
  5. Step 5: Solve for x
    x = 6,524,035,781.53/99,711.75
  6. Step 6: Final answer
    x = 65,428.96

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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.