Home / 80,738.24-121,072.05-40,732.61

Finding the Fourth Proportional to 80,738.24, 121,072.05 and 40,732.61

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Solution

The fourth proportional to 80,738.24, 121,072.05 and 40,732.61 is: 61,081.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,738.24 : 121,072.05 = 40,732.61 : x
  2. Step 2: Convert to fraction form
    80,738.24/121,072.05 = 40,732.61/x
  3. Step 3: Cross multiply
    80,738.24x = 121,072.05 × 40,732.61
  4. Step 4: Simplify right side
    80,738.24x = 4,931,579,989.19
  5. Step 5: Solve for x
    x = 4,931,579,989.19/80,738.24
  6. Step 6: Final answer
    x = 61,081.10

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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.