Home / 84,680.15-126,974.84-28,501.61

Finding the Fourth Proportional to 84,680.15, 126,974.84 and 28,501.61

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Solution

The fourth proportional to 84,680.15, 126,974.84 and 28,501.61 is: 42,737.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,680.15 : 126,974.84 = 28,501.61 : x
  2. Step 2: Convert to fraction form
    84,680.15/126,974.84 = 28,501.61/x
  3. Step 3: Cross multiply
    84,680.15x = 126,974.84 × 28,501.61
  4. Step 4: Simplify right side
    84,680.15x = 3,618,986,592.11
  5. Step 5: Solve for x
    x = 3,618,986,592.11/84,680.15
  6. Step 6: Final answer
    x = 42,737.13

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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.