Home / 87,110.30-130,690.27-42,750.38

Finding the Fourth Proportional to 87,110.30, 130,690.27 and 42,750.38

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Solution

The fourth proportional to 87,110.30, 130,690.27 and 42,750.38 is: 64,137.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,110.30 : 130,690.27 = 42,750.38 : x
  2. Step 2: Convert to fraction form
    87,110.30/130,690.27 = 42,750.38/x
  3. Step 3: Cross multiply
    87,110.30x = 130,690.27 × 42,750.38
  4. Step 4: Simplify right side
    87,110.30x = 5,587,058,704.80
  5. Step 5: Solve for x
    x = 5,587,058,704.80/87,110.30
  6. Step 6: Final answer
    x = 64,137.75

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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.