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Finding the Fourth Proportional to 68,777.61, 103,196.13 and 37,209.88

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Solution

The fourth proportional to 68,777.61, 103,196.13 and 37,209.88 is: 55,830.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,777.61 : 103,196.13 = 37,209.88 : x
  2. Step 2: Convert to fraction form
    68,777.61/103,196.13 = 37,209.88/x
  3. Step 3: Cross multiply
    68,777.61x = 103,196.13 × 37,209.88
  4. Step 4: Simplify right side
    68,777.61x = 3,839,915,603.22
  5. Step 5: Solve for x
    x = 3,839,915,603.22/68,777.61
  6. Step 6: Final answer
    x = 55,830.90

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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.