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Finding the Fourth Proportional to 57,357.95, 79,151.40 and 31,865.96

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Solution

The fourth proportional to 57,357.95, 79,151.40 and 31,865.96 is: 43,973.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,357.95 : 79,151.40 = 31,865.96 : x
  2. Step 2: Convert to fraction form
    57,357.95/79,151.40 = 31,865.96/x
  3. Step 3: Cross multiply
    57,357.95x = 79,151.40 × 31,865.96
  4. Step 4: Simplify right side
    57,357.95x = 2,522,235,188.62
  5. Step 5: Solve for x
    x = 2,522,235,188.62/57,357.95
  6. Step 6: Final answer
    x = 43,973.60

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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.