Home / 68,254.28-102,381.68-20,869.18

Finding the Fourth Proportional to 68,254.28, 102,381.68 and 20,869.18

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Solution

The fourth proportional to 68,254.28, 102,381.68 and 20,869.18 is: 31,303.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,254.28 : 102,381.68 = 20,869.18 : x
  2. Step 2: Convert to fraction form
    68,254.28/102,381.68 = 20,869.18/x
  3. Step 3: Cross multiply
    68,254.28x = 102,381.68 × 20,869.18
  4. Step 4: Simplify right side
    68,254.28x = 2,136,621,708.62
  5. Step 5: Solve for x
    x = 2,136,621,708.62/68,254.28
  6. Step 6: Final answer
    x = 31,303.85

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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.