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Finding the Fourth Proportional to 72,518.46, 108,764.46 and 30,387.27

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Solution

The fourth proportional to 72,518.46, 108,764.46 and 30,387.27 is: 45,575.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,518.46 : 108,764.46 = 30,387.27 : x
  2. Step 2: Convert to fraction form
    72,518.46/108,764.46 = 30,387.27/x
  3. Step 3: Cross multiply
    72,518.46x = 108,764.46 × 30,387.27
  4. Step 4: Simplify right side
    72,518.46x = 3,305,055,012.42
  5. Step 5: Solve for x
    x = 3,305,055,012.42/72,518.46
  6. Step 6: Final answer
    x = 45,575.36

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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.