Home / 78,287.03-117,434.49-22,131.17

Finding the Fourth Proportional to 78,287.03, 117,434.49 and 22,131.17

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Solution

The fourth proportional to 78,287.03, 117,434.49 and 22,131.17 is: 33,197.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,287.03 : 117,434.49 = 22,131.17 : x
  2. Step 2: Convert to fraction form
    78,287.03/117,434.49 = 22,131.17/x
  3. Step 3: Cross multiply
    78,287.03x = 117,434.49 × 22,131.17
  4. Step 4: Simplify right side
    78,287.03x = 2,598,962,662.05
  5. Step 5: Solve for x
    x = 2,598,962,662.05/78,287.03
  6. Step 6: Final answer
    x = 33,197.87

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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.