Home / 80,972.31-121,444.70-21,794.79

Finding the Fourth Proportional to 80,972.31, 121,444.70 and 21,794.79

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Solution

The fourth proportional to 80,972.31, 121,444.70 and 21,794.79 is: 32,688.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,972.31 : 121,444.70 = 21,794.79 : x
  2. Step 2: Convert to fraction form
    80,972.31/121,444.70 = 21,794.79/x
  3. Step 3: Cross multiply
    80,972.31x = 121,444.70 × 21,794.79
  4. Step 4: Simplify right side
    80,972.31x = 2,646,861,624.14
  5. Step 5: Solve for x
    x = 2,646,861,624.14/80,972.31
  6. Step 6: Final answer
    x = 32,688.48

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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.