Home / 84,117.15-126,188.36-27,172.04

Finding the Fourth Proportional to 84,117.15, 126,188.36 and 27,172.04

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Solution

The fourth proportional to 84,117.15, 126,188.36 and 27,172.04 is: 40,762.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,117.15 : 126,188.36 = 27,172.04 : x
  2. Step 2: Convert to fraction form
    84,117.15/126,188.36 = 27,172.04/x
  3. Step 3: Cross multiply
    84,117.15x = 126,188.36 × 27,172.04
  4. Step 4: Simplify right side
    84,117.15x = 3,428,794,398.65
  5. Step 5: Solve for x
    x = 3,428,794,398.65/84,117.15
  6. Step 6: Final answer
    x = 40,762.13

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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.