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Finding the Fourth Proportional to 81,712.16, 112,760.24 and 45,906.08

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Solution

The fourth proportional to 81,712.16, 112,760.24 and 45,906.08 is: 63,348.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,712.16 : 112,760.24 = 45,906.08 : x
  2. Step 2: Convert to fraction form
    81,712.16/112,760.24 = 45,906.08/x
  3. Step 3: Cross multiply
    81,712.16x = 112,760.24 × 45,906.08
  4. Step 4: Simplify right side
    81,712.16x = 5,176,380,598.26
  5. Step 5: Solve for x
    x = 5,176,380,598.26/81,712.16
  6. Step 6: Final answer
    x = 63,348.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.