Home / 80,936.19-121,389.57-21,758.04

Finding the Fourth Proportional to 80,936.19, 121,389.57 and 21,758.04

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Solution

The fourth proportional to 80,936.19, 121,389.57 and 21,758.04 is: 32,633.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,936.19 : 121,389.57 = 21,758.04 : x
  2. Step 2: Convert to fraction form
    80,936.19/121,389.57 = 21,758.04/x
  3. Step 3: Cross multiply
    80,936.19x = 121,389.57 × 21,758.04
  4. Step 4: Simplify right side
    80,936.19x = 2,641,199,119.64
  5. Step 5: Solve for x
    x = 2,641,199,119.64/80,936.19
  6. Step 6: Final answer
    x = 32,633.10

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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.