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Finding the Fourth Proportional to 57,125.97, 78,832.88 and 31,631.79

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Solution

The fourth proportional to 57,125.97, 78,832.88 and 31,631.79 is: 43,651.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,125.97 : 78,832.88 = 31,631.79 : x
  2. Step 2: Convert to fraction form
    57,125.97/78,832.88 = 31,631.79/x
  3. Step 3: Cross multiply
    57,125.97x = 78,832.88 × 31,631.79
  4. Step 4: Simplify right side
    57,125.97x = 2,493,625,065.72
  5. Step 5: Solve for x
    x = 2,493,625,065.72/57,125.97
  6. Step 6: Final answer
    x = 43,651.34

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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.