Home / 68,715.10-103,072.65-54,891.10

Finding the Fourth Proportional to 68,715.10, 103,072.65 and 54,891.10

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Solution

The fourth proportional to 68,715.10, 103,072.65 and 54,891.10 is: 82,336.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,715.10 : 103,072.65 = 54,891.10 : x
  2. Step 2: Convert to fraction form
    68,715.10/103,072.65 = 54,891.10/x
  3. Step 3: Cross multiply
    68,715.10x = 103,072.65 × 54,891.10
  4. Step 4: Simplify right side
    68,715.10x = 5,657,771,138.42
  5. Step 5: Solve for x
    x = 5,657,771,138.42/68,715.10
  6. Step 6: Final answer
    x = 82,336.65

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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.