Home / 68,898.72-103,350.04-18,979.52

Finding the Fourth Proportional to 68,898.72, 103,350.04 and 18,979.52

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Solution

The fourth proportional to 68,898.72, 103,350.04 and 18,979.52 is: 28,469.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,898.72 : 103,350.04 = 18,979.52 : x
  2. Step 2: Convert to fraction form
    68,898.72/103,350.04 = 18,979.52/x
  3. Step 3: Cross multiply
    68,898.72x = 103,350.04 × 18,979.52
  4. Step 4: Simplify right side
    68,898.72x = 1,961,534,151.18
  5. Step 5: Solve for x
    x = 1,961,534,151.18/68,898.72
  6. Step 6: Final answer
    x = 28,469.82

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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.