Home / 57,720.91-86,590.02-20,274.38

Finding the Fourth Proportional to 57,720.91, 86,590.02 and 20,274.38

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Solution

The fourth proportional to 57,720.91, 86,590.02 and 20,274.38 is: 30,414.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,720.91 : 86,590.02 = 20,274.38 : x
  2. Step 2: Convert to fraction form
    57,720.91/86,590.02 = 20,274.38/x
  3. Step 3: Cross multiply
    57,720.91x = 86,590.02 × 20,274.38
  4. Step 4: Simplify right side
    57,720.91x = 1,755,558,868.32
  5. Step 5: Solve for x
    x = 1,755,558,868.32/57,720.91
  6. Step 6: Final answer
    x = 30,414.61

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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.