Home / 78,260.76-117,311.90-30,909.24

Finding the Fourth Proportional to 78,260.76, 117,311.90 and 30,909.24

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Solution

The fourth proportional to 78,260.76, 117,311.90 and 30,909.24 is: 46,332.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,260.76 : 117,311.90 = 30,909.24 : x
  2. Step 2: Convert to fraction form
    78,260.76/117,311.90 = 30,909.24/x
  3. Step 3: Cross multiply
    78,260.76x = 117,311.90 × 30,909.24
  4. Step 4: Simplify right side
    78,260.76x = 3,626,021,517.41
  5. Step 5: Solve for x
    x = 3,626,021,517.41/78,260.76
  6. Step 6: Final answer
    x = 46,332.56

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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.