Home / 84,145.10-126,180.72-31,517.66

Finding the Fourth Proportional to 84,145.10, 126,180.72 and 31,517.66

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Solution

The fourth proportional to 84,145.10, 126,180.72 and 31,517.66 is: 47,262.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,145.10 : 126,180.72 = 31,517.66 : x
  2. Step 2: Convert to fraction form
    84,145.10/126,180.72 = 31,517.66/x
  3. Step 3: Cross multiply
    84,145.10x = 126,180.72 × 31,517.66
  4. Step 4: Simplify right side
    84,145.10x = 3,976,921,031.52
  5. Step 5: Solve for x
    x = 3,976,921,031.52/84,145.10
  6. Step 6: Final answer
    x = 47,262.66

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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.