Home / 87,878.89-121,272.19-47,591.72

Finding the Fourth Proportional to 87,878.89, 121,272.19 and 47,591.72

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Solution

The fourth proportional to 87,878.89, 121,272.19 and 47,591.72 is: 65,676.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,878.89 : 121,272.19 = 47,591.72 : x
  2. Step 2: Convert to fraction form
    87,878.89/121,272.19 = 47,591.72/x
  3. Step 3: Cross multiply
    87,878.89x = 121,272.19 × 47,591.72
  4. Step 4: Simplify right side
    87,878.89x = 5,771,551,839.70
  5. Step 5: Solve for x
    x = 5,771,551,839.70/87,878.89
  6. Step 6: Final answer
    x = 65,676.20

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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.