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Finding the Fourth Proportional to 57,056.92, 78,712.03 and 36,920.29

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Solution

The fourth proportional to 57,056.92, 78,712.03 and 36,920.29 is: 50,932.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,056.92 : 78,712.03 = 36,920.29 : x
  2. Step 2: Convert to fraction form
    57,056.92/78,712.03 = 36,920.29/x
  3. Step 3: Cross multiply
    57,056.92x = 78,712.03 × 36,920.29
  4. Step 4: Simplify right side
    57,056.92x = 2,906,070,974.09
  5. Step 5: Solve for x
    x = 2,906,070,974.09/57,056.92
  6. Step 6: Final answer
    x = 50,932.84

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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.