Home / 86,691.85-130,070.18-34,137.97

Finding the Fourth Proportional to 86,691.85, 130,070.18 and 34,137.97

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Solution

The fourth proportional to 86,691.85, 130,070.18 and 34,137.97 is: 51,219.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,691.85 : 130,070.18 = 34,137.97 : x
  2. Step 2: Convert to fraction form
    86,691.85/130,070.18 = 34,137.97/x
  3. Step 3: Cross multiply
    86,691.85x = 130,070.18 × 34,137.97
  4. Step 4: Simplify right side
    86,691.85x = 4,440,331,732.04
  5. Step 5: Solve for x
    x = 4,440,331,732.04/86,691.85
  6. Step 6: Final answer
    x = 51,219.71

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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.