Home / 78,475.10-117,777.45-36,419.90

Finding the Fourth Proportional to 78,475.10, 117,777.45 and 36,419.90

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Solution

The fourth proportional to 78,475.10, 117,777.45 and 36,419.90 is: 54,659.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,475.10 : 117,777.45 = 36,419.90 : x
  2. Step 2: Convert to fraction form
    78,475.10/117,777.45 = 36,419.90/x
  3. Step 3: Cross multiply
    78,475.10x = 117,777.45 × 36,419.90
  4. Step 4: Simplify right side
    78,475.10x = 4,289,442,951.26
  5. Step 5: Solve for x
    x = 4,289,442,951.26/78,475.10
  6. Step 6: Final answer
    x = 54,659.92

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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.