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Finding the Fourth Proportional to 90,228, 124,511.52 and 49,943.52

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Solution

The fourth proportional to 90,228, 124,511.52 and 49,943.52 is: 68,920.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,228 : 124,511.52 = 49,943.52 : x
  2. Step 2: Convert to fraction form
    90,228/124,511.52 = 49,943.52/x
  3. Step 3: Cross multiply
    90,228x = 124,511.52 × 49,943.52
  4. Step 4: Simplify right side
    90,228x = 6,218,543,589.35
  5. Step 5: Solve for x
    x = 6,218,543,589.35/90,228
  6. Step 6: Final answer
    x = 68,920.33

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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.