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Finding the Fourth Proportional to 72,276.66, 108,431.15 and 34,868.12

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Solution

The fourth proportional to 72,276.66, 108,431.15 and 34,868.12 is: 52,309.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,276.66 : 108,431.15 = 34,868.12 : x
  2. Step 2: Convert to fraction form
    72,276.66/108,431.15 = 34,868.12/x
  3. Step 3: Cross multiply
    72,276.66x = 108,431.15 × 34,868.12
  4. Step 4: Simplify right side
    72,276.66x = 3,780,789,633.44
  5. Step 5: Solve for x
    x = 3,780,789,633.44/72,276.66
  6. Step 6: Final answer
    x = 52,309.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.