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Finding the Fourth Proportional to 79,422.80, 119,101.80 and 26,805.20

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Solution

The fourth proportional to 79,422.80, 119,101.80 and 26,805.20 is: 40,196.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,422.80 : 119,101.80 = 26,805.20 : x
  2. Step 2: Convert to fraction form
    79,422.80/119,101.80 = 26,805.20/x
  3. Step 3: Cross multiply
    79,422.80x = 119,101.80 × 26,805.20
  4. Step 4: Simplify right side
    79,422.80x = 3,192,547,569.36
  5. Step 5: Solve for x
    x = 3,192,547,569.36/79,422.80
  6. Step 6: Final answer
    x = 40,196.86

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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.