Home / 68,904.15-103,350.15-18,979.80

Finding the Fourth Proportional to 68,904.15, 103,350.15 and 18,979.80

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Solution

The fourth proportional to 68,904.15, 103,350.15 and 18,979.80 is: 28,468.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,904.15 : 103,350.15 = 18,979.80 : x
  2. Step 2: Convert to fraction form
    68,904.15/103,350.15 = 18,979.80/x
  3. Step 3: Cross multiply
    68,904.15x = 103,350.15 × 18,979.80
  4. Step 4: Simplify right side
    68,904.15x = 1,961,565,176.97
  5. Step 5: Solve for x
    x = 1,961,565,176.97/68,904.15
  6. Step 6: Final answer
    x = 28,468.03

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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.