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Finding the Fourth Proportional to 57,044.32, 78,721.38 and 31,893.76

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Solution

The fourth proportional to 57,044.32, 78,721.38 and 31,893.76 is: 44,013.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,044.32 : 78,721.38 = 31,893.76 : x
  2. Step 2: Convert to fraction form
    57,044.32/78,721.38 = 31,893.76/x
  3. Step 3: Cross multiply
    57,044.32x = 78,721.38 × 31,893.76
  4. Step 4: Simplify right side
    57,044.32x = 2,510,720,800.59
  5. Step 5: Solve for x
    x = 2,510,720,800.59/57,044.32
  6. Step 6: Final answer
    x = 44,013.51

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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.