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Finding the Fourth Proportional to 72,597.20, 108,844.32 and 28,186.52

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Solution

The fourth proportional to 72,597.20, 108,844.32 and 28,186.52 is: 42,259.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,597.20 : 108,844.32 = 28,186.52 : x
  2. Step 2: Convert to fraction form
    72,597.20/108,844.32 = 28,186.52/x
  3. Step 3: Cross multiply
    72,597.20x = 108,844.32 × 28,186.52
  4. Step 4: Simplify right side
    72,597.20x = 3,067,942,602.57
  5. Step 5: Solve for x
    x = 3,067,942,602.57/72,597.20
  6. Step 6: Final answer
    x = 42,259.79

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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.