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Finding the Fourth Proportional to 68,871, 103,296.80 and 22,117.80

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Solution

The fourth proportional to 68,871, 103,296.80 and 22,117.80 is: 33,173.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,871 : 103,296.80 = 22,117.80 : x
  2. Step 2: Convert to fraction form
    68,871/103,296.80 = 22,117.80/x
  3. Step 3: Cross multiply
    68,871x = 103,296.80 × 22,117.80
  4. Step 4: Simplify right side
    68,871x = 2,284,697,963.04
  5. Step 5: Solve for x
    x = 2,284,697,963.04/68,871
  6. Step 6: Final answer
    x = 33,173.58

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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.