Home / 86,031.90-129,044.30-29,884.72

Finding the Fourth Proportional to 86,031.90, 129,044.30 and 29,884.72

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Solution

The fourth proportional to 86,031.90, 129,044.30 and 29,884.72 is: 44,825.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,031.90 : 129,044.30 = 29,884.72 : x
  2. Step 2: Convert to fraction form
    86,031.90/129,044.30 = 29,884.72/x
  3. Step 3: Cross multiply
    86,031.90x = 129,044.30 × 29,884.72
  4. Step 4: Simplify right side
    86,031.90x = 3,856,452,773.10
  5. Step 5: Solve for x
    x = 3,856,452,773.10/86,031.90
  6. Step 6: Final answer
    x = 44,825.85

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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.