Home / 82,487.10-123,734.70-43,121.10

Finding the Fourth Proportional to 82,487.10, 123,734.70 and 43,121.10

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Solution

The fourth proportional to 82,487.10, 123,734.70 and 43,121.10 is: 64,683.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,487.10 : 123,734.70 = 43,121.10 : x
  2. Step 2: Convert to fraction form
    82,487.10/123,734.70 = 43,121.10/x
  3. Step 3: Cross multiply
    82,487.10x = 123,734.70 × 43,121.10
  4. Step 4: Simplify right side
    82,487.10x = 5,335,576,372.17
  5. Step 5: Solve for x
    x = 5,335,576,372.17/82,487.10
  6. Step 6: Final answer
    x = 64,683.77

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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.