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Finding the Fourth Proportional to 68,962.80, 103,442.10 and 19,045.92

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Solution

The fourth proportional to 68,962.80, 103,442.10 and 19,045.92 is: 28,568.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,962.80 : 103,442.10 = 19,045.92 : x
  2. Step 2: Convert to fraction form
    68,962.80/103,442.10 = 19,045.92/x
  3. Step 3: Cross multiply
    68,962.80x = 103,442.10 × 19,045.92
  4. Step 4: Simplify right side
    68,962.80x = 1,970,149,961.23
  5. Step 5: Solve for x
    x = 1,970,149,961.23/68,962.80
  6. Step 6: Final answer
    x = 28,568.30

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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.