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Finding the Fourth Proportional to 72,653.30, 108,976.96 and 25,279.13

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Solution

The fourth proportional to 72,653.30, 108,976.96 and 25,279.13 is: 37,917.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,653.30 : 108,976.96 = 25,279.13 : x
  2. Step 2: Convert to fraction form
    72,653.30/108,976.96 = 25,279.13/x
  3. Step 3: Cross multiply
    72,653.30x = 108,976.96 × 25,279.13
  4. Step 4: Simplify right side
    72,653.30x = 2,754,843,042.89
  5. Step 5: Solve for x
    x = 2,754,843,042.89/72,653.30
  6. Step 6: Final answer
    x = 37,917.66

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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.