Home / 87,613.83-131,420.73-21,053.96

Finding the Fourth Proportional to 87,613.83, 131,420.73 and 21,053.96

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Solution

The fourth proportional to 87,613.83, 131,420.73 and 21,053.96 is: 31,580.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,613.83 : 131,420.73 = 21,053.96 : x
  2. Step 2: Convert to fraction form
    87,613.83/131,420.73 = 21,053.96/x
  3. Step 3: Cross multiply
    87,613.83x = 131,420.73 × 21,053.96
  4. Step 4: Simplify right side
    87,613.83x = 2,766,926,845.23
  5. Step 5: Solve for x
    x = 2,766,926,845.23/87,613.83
  6. Step 6: Final answer
    x = 31,580.94

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1.5x scale

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.