Home / 84,306.93-126,423.42-31,679.46

Finding the Fourth Proportional to 84,306.93, 126,423.42 and 31,679.46

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Solution

The fourth proportional to 84,306.93, 126,423.42 and 31,679.46 is: 47,505.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,306.93 : 126,423.42 = 31,679.46 : x
  2. Step 2: Convert to fraction form
    84,306.93/126,423.42 = 31,679.46/x
  3. Step 3: Cross multiply
    84,306.93x = 126,423.42 × 31,679.46
  4. Step 4: Simplify right side
    84,306.93x = 4,005,025,676.95
  5. Step 5: Solve for x
    x = 4,005,025,676.95/84,306.93
  6. Step 6: Final answer
    x = 47,505.30

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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.