Home / 91,578.20-137,388.15-35,418.47

Finding the Fourth Proportional to 91,578.20, 137,388.15 and 35,418.47

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Solution

The fourth proportional to 91,578.20, 137,388.15 and 35,418.47 is: 53,135.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,578.20 : 137,388.15 = 35,418.47 : x
  2. Step 2: Convert to fraction form
    91,578.20/137,388.15 = 35,418.47/x
  3. Step 3: Cross multiply
    91,578.20x = 137,388.15 × 35,418.47
  4. Step 4: Simplify right side
    91,578.20x = 4,866,077,382.19
  5. Step 5: Solve for x
    x = 4,866,077,382.19/91,578.20
  6. Step 6: Final answer
    x = 53,135.76

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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.