Home / 80,250.36-120,309.85-30,302.11

Finding the Fourth Proportional to 80,250.36, 120,309.85 and 30,302.11

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Solution

The fourth proportional to 80,250.36, 120,309.85 and 30,302.11 is: 45,428.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,250.36 : 120,309.85 = 30,302.11 : x
  2. Step 2: Convert to fraction form
    80,250.36/120,309.85 = 30,302.11/x
  3. Step 3: Cross multiply
    80,250.36x = 120,309.85 × 30,302.11
  4. Step 4: Simplify right side
    80,250.36x = 3,645,642,308.78
  5. Step 5: Solve for x
    x = 3,645,642,308.78/80,250.36
  6. Step 6: Final answer
    x = 45,428.36

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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.