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Finding the Fourth Proportional to 83,850.95, 125,776.42 and 21,521.45

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Solution

The fourth proportional to 83,850.95, 125,776.42 and 21,521.45 is: 32,282.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,850.95 : 125,776.42 = 21,521.45 : x
  2. Step 2: Convert to fraction form
    83,850.95/125,776.42 = 21,521.45/x
  3. Step 3: Cross multiply
    83,850.95x = 125,776.42 × 21,521.45
  4. Step 4: Simplify right side
    83,850.95x = 2,706,890,251.52
  5. Step 5: Solve for x
    x = 2,706,890,251.52/83,850.95
  6. Step 6: Final answer
    x = 32,282.17

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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.