Home / 78,770.12-117,877.80-49,201.88

Finding the Fourth Proportional to 78,770.12, 117,877.80 and 49,201.88

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Solution

The fourth proportional to 78,770.12, 117,877.80 and 49,201.88 is: 73,629.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,770.12 : 117,877.80 = 49,201.88 : x
  2. Step 2: Convert to fraction form
    78,770.12/117,877.80 = 49,201.88/x
  3. Step 3: Cross multiply
    78,770.12x = 117,877.80 × 49,201.88
  4. Step 4: Simplify right side
    78,770.12x = 5,799,809,370.26
  5. Step 5: Solve for x
    x = 5,799,809,370.26/78,770.12
  6. Step 6: Final answer
    x = 73,629.56

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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.