Home / 91,511.10-137,324.97-38,920.50

Finding the Fourth Proportional to 91,511.10, 137,324.97 and 38,920.50

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Solution

The fourth proportional to 91,511.10, 137,324.97 and 38,920.50 is: 58,405.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,511.10 : 137,324.97 = 38,920.50 : x
  2. Step 2: Convert to fraction form
    91,511.10/137,324.97 = 38,920.50/x
  3. Step 3: Cross multiply
    91,511.10x = 137,324.97 × 38,920.50
  4. Step 4: Simplify right side
    91,511.10x = 5,344,756,494.89
  5. Step 5: Solve for x
    x = 5,344,756,494.89/91,511.10
  6. Step 6: Final answer
    x = 58,405.55

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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.