Home / 80,733.74-121,065.30-40,728.11

Finding the Fourth Proportional to 80,733.74, 121,065.30 and 40,728.11

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Solution

The fourth proportional to 80,733.74, 121,065.30 and 40,728.11 is: 61,074.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,733.74 : 121,065.30 = 40,728.11 : x
  2. Step 2: Convert to fraction form
    80,733.74/121,065.30 = 40,728.11/x
  3. Step 3: Cross multiply
    80,733.74x = 121,065.30 × 40,728.11
  4. Step 4: Simplify right side
    80,733.74x = 4,930,760,250.26
  5. Step 5: Solve for x
    x = 4,930,760,250.26/80,733.74
  6. Step 6: Final answer
    x = 61,074.35

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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.