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Finding the Fourth Proportional to 84,081.52, 126,107.16 and 21,748.24

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Solution

The fourth proportional to 84,081.52, 126,107.16 and 21,748.24 is: 32,618.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,081.52 : 126,107.16 = 21,748.24 : x
  2. Step 2: Convert to fraction form
    84,081.52/126,107.16 = 21,748.24/x
  3. Step 3: Cross multiply
    84,081.52x = 126,107.16 × 21,748.24
  4. Step 4: Simplify right side
    84,081.52x = 2,742,608,781.40
  5. Step 5: Solve for x
    x = 2,742,608,781.40/84,081.52
  6. Step 6: Final answer
    x = 32,618.45

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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.