Home / 67,811.20-93,578.01-39,128.61

Finding the Fourth Proportional to 67,811.20, 93,578.01 and 39,128.61

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Solution

The fourth proportional to 67,811.20, 93,578.01 and 39,128.61 is: 53,996.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,811.20 : 93,578.01 = 39,128.61 : x
  2. Step 2: Convert to fraction form
    67,811.20/93,578.01 = 39,128.61/x
  3. Step 3: Cross multiply
    67,811.20x = 93,578.01 × 39,128.61
  4. Step 4: Simplify right side
    67,811.20x = 3,661,577,691.81
  5. Step 5: Solve for x
    x = 3,661,577,691.81/67,811.20
  6. Step 6: Final answer
    x = 53,996.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.