Home / 80,738.61-121,072.61-40,732.98

Finding the Fourth Proportional to 80,738.61, 121,072.61 and 40,732.98

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Solution

The fourth proportional to 80,738.61, 121,072.61 and 40,732.98 is: 61,081.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,738.61 : 121,072.61 = 40,732.98 : x
  2. Step 2: Convert to fraction form
    80,738.61/121,072.61 = 40,732.98/x
  3. Step 3: Cross multiply
    80,738.61x = 121,072.61 × 40,732.98
  4. Step 4: Simplify right side
    80,738.61x = 4,931,648,201.68
  5. Step 5: Solve for x
    x = 4,931,648,201.68/80,738.61
  6. Step 6: Final answer
    x = 61,081.66

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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.