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Finding the Fourth Proportional to 84,589.48, 126,883.84 and 21,410.20

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Solution

The fourth proportional to 84,589.48, 126,883.84 and 21,410.20 is: 32,115.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,589.48 : 126,883.84 = 21,410.20 : x
  2. Step 2: Convert to fraction form
    84,589.48/126,883.84 = 21,410.20/x
  3. Step 3: Cross multiply
    84,589.48x = 126,883.84 × 21,410.20
  4. Step 4: Simplify right side
    84,589.48x = 2,716,608,391.17
  5. Step 5: Solve for x
    x = 2,716,608,391.17/84,589.48
  6. Step 6: Final answer
    x = 32,115.20

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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.