Home / 81,992.12-123,046.50-63,290.84

Finding the Fourth Proportional to 81,992.12, 123,046.50 and 63,290.84

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Solution

The fourth proportional to 81,992.12, 123,046.50 and 63,290.84 is: 94,981.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,992.12 : 123,046.50 = 63,290.84 : x
  2. Step 2: Convert to fraction form
    81,992.12/123,046.50 = 63,290.84/x
  3. Step 3: Cross multiply
    81,992.12x = 123,046.50 × 63,290.84
  4. Step 4: Simplify right side
    81,992.12x = 7,787,716,344.06
  5. Step 5: Solve for x
    x = 7,787,716,344.06/81,992.12
  6. Step 6: Final answer
    x = 94,981.28

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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.