Home / 84,358.40-126,586.20-31,805.60

Finding the Fourth Proportional to 84,358.40, 126,586.20 and 31,805.60

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Solution

The fourth proportional to 84,358.40, 126,586.20 and 31,805.60 is: 47,726.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,358.40 : 126,586.20 = 31,805.60 : x
  2. Step 2: Convert to fraction form
    84,358.40/126,586.20 = 31,805.60/x
  3. Step 3: Cross multiply
    84,358.40x = 126,586.20 × 31,805.60
  4. Step 4: Simplify right side
    84,358.40x = 4,026,150,042.72
  5. Step 5: Solve for x
    x = 4,026,150,042.72/84,358.40
  6. Step 6: Final answer
    x = 47,726.72

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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.