Home / 87,613.68-131,420.50-21,053.81

Finding the Fourth Proportional to 87,613.68, 131,420.50 and 21,053.81

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Solution

The fourth proportional to 87,613.68, 131,420.50 and 21,053.81 is: 31,580.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,613.68 : 131,420.50 = 21,053.81 : x
  2. Step 2: Convert to fraction form
    87,613.68/131,420.50 = 21,053.81/x
  3. Step 3: Cross multiply
    87,613.68x = 131,420.50 × 21,053.81
  4. Step 4: Simplify right side
    87,613.68x = 2,766,901,527.37
  5. Step 5: Solve for x
    x = 2,766,901,527.37/87,613.68
  6. Step 6: Final answer
    x = 31,580.70

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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.