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Finding the Fourth Proportional to 84,073.56, 126,112.67 and 20,891.13

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Solution

The fourth proportional to 84,073.56, 126,112.67 and 20,891.13 is: 31,337.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,073.56 : 126,112.67 = 20,891.13 : x
  2. Step 2: Convert to fraction form
    84,073.56/126,112.67 = 20,891.13/x
  3. Step 3: Cross multiply
    84,073.56x = 126,112.67 × 20,891.13
  4. Step 4: Simplify right side
    84,073.56x = 2,634,635,684.58
  5. Step 5: Solve for x
    x = 2,634,635,684.58/84,073.56
  6. Step 6: Final answer
    x = 31,337.27

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1.5x scale

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.