Home / 81,202.26-121,692.06-45,680.88

Finding the Fourth Proportional to 81,202.26, 121,692.06 and 45,680.88

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Solution

The fourth proportional to 81,202.26, 121,692.06 and 45,680.88 is: 68,458.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,202.26 : 121,692.06 = 45,680.88 : x
  2. Step 2: Convert to fraction form
    81,202.26/121,692.06 = 45,680.88/x
  3. Step 3: Cross multiply
    81,202.26x = 121,692.06 × 45,680.88
  4. Step 4: Simplify right side
    81,202.26x = 5,559,000,389.81
  5. Step 5: Solve for x
    x = 5,559,000,389.81/81,202.26
  6. Step 6: Final answer
    x = 68,458.69

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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.