Home / 82,412.90-123,638.00-26,256.21

Finding the Fourth Proportional to 82,412.90, 123,638.00 and 26,256.21

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Solution

The fourth proportional to 82,412.90, 123,638.00 and 26,256.21 is: 39,390.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,412.90 : 123,638.00 = 26,256.21 : x
  2. Step 2: Convert to fraction form
    82,412.90/123,638.00 = 26,256.21/x
  3. Step 3: Cross multiply
    82,412.90x = 123,638.00 × 26,256.21
  4. Step 4: Simplify right side
    82,412.90x = 3,246,265,160.70
  5. Step 5: Solve for x
    x = 3,246,265,160.70/82,412.90
  6. Step 6: Final answer
    x = 39,390.26

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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.