Home / 78,820.12-117,952.80-49,251.88

Finding the Fourth Proportional to 78,820.12, 117,952.80 and 49,251.88

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Solution

The fourth proportional to 78,820.12, 117,952.80 and 49,251.88 is: 73,704.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,820.12 : 117,952.80 = 49,251.88 : x
  2. Step 2: Convert to fraction form
    78,820.12/117,952.80 = 49,251.88/x
  3. Step 3: Cross multiply
    78,820.12x = 117,952.80 × 49,251.88
  4. Step 4: Simplify right side
    78,820.12x = 5,809,397,151.26
  5. Step 5: Solve for x
    x = 5,809,397,151.26/78,820.12
  6. Step 6: Final answer
    x = 73,704.50

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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.