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Finding the Fourth Proportional to 84,080.84, 126,139.72 and 24,921.16

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Solution

The fourth proportional to 84,080.84, 126,139.72 and 24,921.16 is: 37,387.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,080.84 : 126,139.72 = 24,921.16 : x
  2. Step 2: Convert to fraction form
    84,080.84/126,139.72 = 24,921.16/x
  3. Step 3: Cross multiply
    84,080.84x = 126,139.72 × 24,921.16
  4. Step 4: Simplify right side
    84,080.84x = 3,143,548,144.48
  5. Step 5: Solve for x
    x = 3,143,548,144.48/84,080.84
  6. Step 6: Final answer
    x = 37,387.21

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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.