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Finding the Fourth Proportional to 57,275.96, 79,034.45 and 31,781.48

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Solution

The fourth proportional to 57,275.96, 79,034.45 and 31,781.48 is: 43,854.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,275.96 : 79,034.45 = 31,781.48 : x
  2. Step 2: Convert to fraction form
    57,275.96/79,034.45 = 31,781.48/x
  3. Step 3: Cross multiply
    57,275.96x = 79,034.45 × 31,781.48
  4. Step 4: Simplify right side
    57,275.96x = 2,511,831,237.91
  5. Step 5: Solve for x
    x = 2,511,831,237.91/57,275.96
  6. Step 6: Final answer
    x = 43,854.90

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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.