Home / 79,920.54-119,877.98-19,949.36

Finding the Fourth Proportional to 79,920.54, 119,877.98 and 19,949.36

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Solution

The fourth proportional to 79,920.54, 119,877.98 and 19,949.36 is: 29,923.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,920.54 : 119,877.98 = 19,949.36 : x
  2. Step 2: Convert to fraction form
    79,920.54/119,877.98 = 19,949.36/x
  3. Step 3: Cross multiply
    79,920.54x = 119,877.98 × 19,949.36
  4. Step 4: Simplify right side
    79,920.54x = 2,391,488,279.96
  5. Step 5: Solve for x
    x = 2,391,488,279.96/79,920.54
  6. Step 6: Final answer
    x = 29,923.32

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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.