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Finding the Fourth Proportional to 68,503.59, 102,813.71 and 26,979.75

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Solution

The fourth proportional to 68,503.59, 102,813.71 and 26,979.75 is: 40,492.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,503.59 : 102,813.71 = 26,979.75 : x
  2. Step 2: Convert to fraction form
    68,503.59/102,813.71 = 26,979.75/x
  3. Step 3: Cross multiply
    68,503.59x = 102,813.71 × 26,979.75
  4. Step 4: Simplify right side
    68,503.59x = 2,773,888,057.47
  5. Step 5: Solve for x
    x = 2,773,888,057.47/68,503.59
  6. Step 6: Final answer
    x = 40,492.59

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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.