Home / 80,866.15-121,282.52-21,687.75

Finding the Fourth Proportional to 80,866.15, 121,282.52 and 21,687.75

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Solution

The fourth proportional to 80,866.15, 121,282.52 and 21,687.75 is: 32,527.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,866.15 : 121,282.52 = 21,687.75 : x
  2. Step 2: Convert to fraction form
    80,866.15/121,282.52 = 21,687.75/x
  3. Step 3: Cross multiply
    80,866.15x = 121,282.52 × 21,687.75
  4. Step 4: Simplify right side
    80,866.15x = 2,630,344,864.69
  5. Step 5: Solve for x
    x = 2,630,344,864.69/80,866.15
  6. Step 6: Final answer
    x = 32,527.14

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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.