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Finding the Fourth Proportional to 48,539.52, 72,809.28 and 13,479.12

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Solution

The fourth proportional to 48,539.52, 72,809.28 and 13,479.12 is: 20,218.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,539.52 : 72,809.28 = 13,479.12 : x
  2. Step 2: Convert to fraction form
    48,539.52/72,809.28 = 13,479.12/x
  3. Step 3: Cross multiply
    48,539.52x = 72,809.28 × 13,479.12
  4. Step 4: Simplify right side
    48,539.52x = 981,405,022.23
  5. Step 5: Solve for x
    x = 981,405,022.23/48,539.52
  6. Step 6: Final answer
    x = 20,218.68

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