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Finding the Fourth Proportional to 89,765.88, 123,831.36 and 68,508.24

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Solution

The fourth proportional to 89,765.88, 123,831.36 and 68,508.24 is: 94,506.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,765.88 : 123,831.36 = 68,508.24 : x
  2. Step 2: Convert to fraction form
    89,765.88/123,831.36 = 68,508.24/x
  3. Step 3: Cross multiply
    89,765.88x = 123,831.36 × 68,508.24
  4. Step 4: Simplify right side
    89,765.88x = 8,483,468,530.41
  5. Step 5: Solve for x
    x = 8,483,468,530.41/89,765.88
  6. Step 6: Final answer
    x = 94,506.60

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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.