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Finding the Fourth Proportional to 68,859.60, 103,289.40 and 22,117.20

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Solution

The fourth proportional to 68,859.60, 103,289.40 and 22,117.20 is: 33,175.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,859.60 : 103,289.40 = 22,117.20 : x
  2. Step 2: Convert to fraction form
    68,859.60/103,289.40 = 22,117.20/x
  3. Step 3: Cross multiply
    68,859.60x = 103,289.40 × 22,117.20
  4. Step 4: Simplify right side
    68,859.60x = 2,284,472,317.68
  5. Step 5: Solve for x
    x = 2,284,472,317.68/68,859.60
  6. Step 6: Final answer
    x = 33,175.80

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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.