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Finding the Fourth Proportional to 57,871.80, 79,856.15 and 32,379.55

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Solution

The fourth proportional to 57,871.80, 79,856.15 and 32,379.55 is: 44,679.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,871.80 : 79,856.15 = 32,379.55 : x
  2. Step 2: Convert to fraction form
    57,871.80/79,856.15 = 32,379.55/x
  3. Step 3: Cross multiply
    57,871.80x = 79,856.15 × 32,379.55
  4. Step 4: Simplify right side
    57,871.80x = 2,585,705,840.19
  5. Step 5: Solve for x
    x = 2,585,705,840.19/57,871.80
  6. Step 6: Final answer
    x = 44,679.89

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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.