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Finding the Fourth Proportional to 72,680.74, 109,017.84 and 25,329.22

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Solution

The fourth proportional to 72,680.74, 109,017.84 and 25,329.22 is: 37,992.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,680.74 : 109,017.84 = 25,329.22 : x
  2. Step 2: Convert to fraction form
    72,680.74/109,017.84 = 25,329.22/x
  3. Step 3: Cross multiply
    72,680.74x = 109,017.84 × 25,329.22
  4. Step 4: Simplify right side
    72,680.74x = 2,761,336,853.28
  5. Step 5: Solve for x
    x = 2,761,336,853.28/72,680.74
  6. Step 6: Final answer
    x = 37,992.69

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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.