Home / 84,079.14-126,055.53-39,680.61

Finding the Fourth Proportional to 84,079.14, 126,055.53 and 39,680.61

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Solution

The fourth proportional to 84,079.14, 126,055.53 and 39,680.61 is: 59,491.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,079.14 : 126,055.53 = 39,680.61 : x
  2. Step 2: Convert to fraction form
    84,079.14/126,055.53 = 39,680.61/x
  3. Step 3: Cross multiply
    84,079.14x = 126,055.53 × 39,680.61
  4. Step 4: Simplify right side
    84,079.14x = 5,001,960,324.27
  5. Step 5: Solve for x
    x = 5,001,960,324.27/84,079.14
  6. Step 6: Final answer
    x = 59,491.10

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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.