Home / 68,279.12-102,428.40-21,527.04

Finding the Fourth Proportional to 68,279.12, 102,428.40 and 21,527.04

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Solution

The fourth proportional to 68,279.12, 102,428.40 and 21,527.04 is: 32,293.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,279.12 : 102,428.40 = 21,527.04 : x
  2. Step 2: Convert to fraction form
    68,279.12/102,428.40 = 21,527.04/x
  3. Step 3: Cross multiply
    68,279.12x = 102,428.40 × 21,527.04
  4. Step 4: Simplify right side
    68,279.12x = 2,204,980,263.94
  5. Step 5: Solve for x
    x = 2,204,980,263.94/68,279.12
  6. Step 6: Final answer
    x = 32,293.62

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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.