Home / 87,442.89-120,691.36-51,161.22

Finding the Fourth Proportional to 87,442.89, 120,691.36 and 51,161.22

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Solution

The fourth proportional to 87,442.89, 120,691.36 and 51,161.22 is: 70,614.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,442.89 : 120,691.36 = 51,161.22 : x
  2. Step 2: Convert to fraction form
    87,442.89/120,691.36 = 51,161.22/x
  3. Step 3: Cross multiply
    87,442.89x = 120,691.36 × 51,161.22
  4. Step 4: Simplify right side
    87,442.89x = 6,174,716,965.25
  5. Step 5: Solve for x
    x = 6,174,716,965.25/87,442.89
  6. Step 6: Final answer
    x = 70,614.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.