Home / 84,576.83-126,876.15-28,392.80

Finding the Fourth Proportional to 84,576.83, 126,876.15 and 28,392.80

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Solution

The fourth proportional to 84,576.83, 126,876.15 and 28,392.80 is: 42,592.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,576.83 : 126,876.15 = 28,392.80 : x
  2. Step 2: Convert to fraction form
    84,576.83/126,876.15 = 28,392.80/x
  3. Step 3: Cross multiply
    84,576.83x = 126,876.15 × 28,392.80
  4. Step 4: Simplify right side
    84,576.83x = 3,602,368,517.34
  5. Step 5: Solve for x
    x = 3,602,368,517.34/84,576.83
  6. Step 6: Final answer
    x = 42,592.86

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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.