Home / 87,543.66-131,356.50-43,146.21

Finding the Fourth Proportional to 87,543.66, 131,356.50 and 43,146.21

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Solution

The fourth proportional to 87,543.66, 131,356.50 and 43,146.21 is: 64,739.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,543.66 : 131,356.50 = 43,146.21 : x
  2. Step 2: Convert to fraction form
    87,543.66/131,356.50 = 43,146.21/x
  3. Step 3: Cross multiply
    87,543.66x = 131,356.50 × 43,146.21
  4. Step 4: Simplify right side
    87,543.66x = 5,667,535,133.87
  5. Step 5: Solve for x
    x = 5,667,535,133.87/87,543.66
  6. Step 6: Final answer
    x = 64,739.53

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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.