Home / 84,711.90-126,985.20-40,326.72

Finding the Fourth Proportional to 84,711.90, 126,985.20 and 40,326.72

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Solution

The fourth proportional to 84,711.90, 126,985.20 and 40,326.72 is: 60,450.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,711.90 : 126,985.20 = 40,326.72 : x
  2. Step 2: Convert to fraction form
    84,711.90/126,985.20 = 40,326.72/x
  3. Step 3: Cross multiply
    84,711.90x = 126,985.20 × 40,326.72
  4. Step 4: Simplify right side
    84,711.90x = 5,120,896,604.54
  5. Step 5: Solve for x
    x = 5,120,896,604.54/84,711.90
  6. Step 6: Final answer
    x = 60,450.73

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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.