Home / 84,382.94-126,549.30-31,779.92

Finding the Fourth Proportional to 84,382.94, 126,549.30 and 31,779.92

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Solution

The fourth proportional to 84,382.94, 126,549.30 and 31,779.92 is: 47,660.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,382.94 : 126,549.30 = 31,779.92 : x
  2. Step 2: Convert to fraction form
    84,382.94/126,549.30 = 31,779.92/x
  3. Step 3: Cross multiply
    84,382.94x = 126,549.30 × 31,779.92
  4. Step 4: Simplify right side
    84,382.94x = 4,021,726,630.06
  5. Step 5: Solve for x
    x = 4,021,726,630.06/84,382.94
  6. Step 6: Final answer
    x = 47,660.42

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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.