Home / 77,928.60-107,515.68-43,932.90

Finding the Fourth Proportional to 77,928.60, 107,515.68 and 43,932.90

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Solution

The fourth proportional to 77,928.60, 107,515.68 and 43,932.90 is: 60,612.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,928.60 : 107,515.68 = 43,932.90 : x
  2. Step 2: Convert to fraction form
    77,928.60/107,515.68 = 43,932.90/x
  3. Step 3: Cross multiply
    77,928.60x = 107,515.68 × 43,932.90
  4. Step 4: Simplify right side
    77,928.60x = 4,723,475,617.87
  5. Step 5: Solve for x
    x = 4,723,475,617.87/77,928.60
  6. Step 6: Final answer
    x = 60,612.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.