Home / 84,291.12-126,455.17-31,700.61

Finding the Fourth Proportional to 84,291.12, 126,455.17 and 31,700.61

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Solution

The fourth proportional to 84,291.12, 126,455.17 and 31,700.61 is: 47,557.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,291.12 : 126,455.17 = 31,700.61 : x
  2. Step 2: Convert to fraction form
    84,291.12/126,455.17 = 31,700.61/x
  3. Step 3: Cross multiply
    84,291.12x = 126,455.17 × 31,700.61
  4. Step 4: Simplify right side
    84,291.12x = 4,008,706,026.65
  5. Step 5: Solve for x
    x = 4,008,706,026.65/84,291.12
  6. Step 6: Final answer
    x = 47,557.87

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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.