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Finding the Fourth Proportional to 79,689.20, 119,505.92 and 23,514.40

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Solution

The fourth proportional to 79,689.20, 119,505.92 and 23,514.40 is: 35,263.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,689.20 : 119,505.92 = 23,514.40 : x
  2. Step 2: Convert to fraction form
    79,689.20/119,505.92 = 23,514.40/x
  3. Step 3: Cross multiply
    79,689.20x = 119,505.92 × 23,514.40
  4. Step 4: Simplify right side
    79,689.20x = 2,810,110,005.25
  5. Step 5: Solve for x
    x = 2,810,110,005.25/79,689.20
  6. Step 6: Final answer
    x = 35,263.37

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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.