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Finding the Fourth Proportional to 57,754.40, 86,634.84 and 54,612.68

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Solution

The fourth proportional to 57,754.40, 86,634.84 and 54,612.68 is: 81,922.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,754.40 : 86,634.84 = 54,612.68 : x
  2. Step 2: Convert to fraction form
    57,754.40/86,634.84 = 54,612.68/x
  3. Step 3: Cross multiply
    57,754.40x = 86,634.84 × 54,612.68
  4. Step 4: Simplify right side
    57,754.40x = 4,731,360,793.77
  5. Step 5: Solve for x
    x = 4,731,360,793.77/57,754.40
  6. Step 6: Final answer
    x = 81,922.08

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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.