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Finding the Fourth Proportional to 80,862.84, 121,290.21 and 30,966.84

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Solution

The fourth proportional to 80,862.84, 121,290.21 and 30,966.84 is: 46,448.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,862.84 : 121,290.21 = 30,966.84 : x
  2. Step 2: Convert to fraction form
    80,862.84/121,290.21 = 30,966.84/x
  3. Step 3: Cross multiply
    80,862.84x = 121,290.21 × 30,966.84
  4. Step 4: Simplify right side
    80,862.84x = 3,755,974,526.64
  5. Step 5: Solve for x
    x = 3,755,974,526.64/80,862.84
  6. Step 6: Final answer
    x = 46,448.71

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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.