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Finding the Fourth Proportional to 68,888.28, 95,065.80 and 39,080.28

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Solution

The fourth proportional to 68,888.28, 95,065.80 and 39,080.28 is: 53,930.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,888.28 : 95,065.80 = 39,080.28 : x
  2. Step 2: Convert to fraction form
    68,888.28/95,065.80 = 39,080.28/x
  3. Step 3: Cross multiply
    68,888.28x = 95,065.80 × 39,080.28
  4. Step 4: Simplify right side
    68,888.28x = 3,715,198,082.42
  5. Step 5: Solve for x
    x = 3,715,198,082.42/68,888.28
  6. Step 6: Final answer
    x = 53,930.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.