Home / 77,282.20-115,923.30-72,616.60

Finding the Fourth Proportional to 77,282.20, 115,923.30 and 72,616.60

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Solution

The fourth proportional to 77,282.20, 115,923.30 and 72,616.60 is: 108,924.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,282.20 : 115,923.30 = 72,616.60 : x
  2. Step 2: Convert to fraction form
    77,282.20/115,923.30 = 72,616.60/x
  3. Step 3: Cross multiply
    77,282.20x = 115,923.30 × 72,616.60
  4. Step 4: Simplify right side
    77,282.20x = 8,417,955,906.78
  5. Step 5: Solve for x
    x = 8,417,955,906.78/77,282.20
  6. Step 6: Final answer
    x = 108,924.90

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1.5x scale

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.