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Finding the Fourth Proportional to 48,879.20, 73,304.40 and 19,287.20

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Solution

The fourth proportional to 48,879.20, 73,304.40 and 19,287.20 is: 28,925.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,879.20 : 73,304.40 = 19,287.20 : x
  2. Step 2: Convert to fraction form
    48,879.20/73,304.40 = 19,287.20/x
  3. Step 3: Cross multiply
    48,879.20x = 73,304.40 × 19,287.20
  4. Step 4: Simplify right side
    48,879.20x = 1,413,836,623.68
  5. Step 5: Solve for x
    x = 1,413,836,623.68/48,879.20
  6. Step 6: Final answer
    x = 28,925.12

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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.