Home / 45,122.03-67,638.42-21,387.90

Finding the Fourth Proportional to 45,122.03, 67,638.42 and 21,387.90

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Solution

The fourth proportional to 45,122.03, 67,638.42 and 21,387.90 is: 32,060.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,122.03 : 67,638.42 = 21,387.90 : x
  2. Step 2: Convert to fraction form
    45,122.03/67,638.42 = 21,387.90/x
  3. Step 3: Cross multiply
    45,122.03x = 67,638.42 × 21,387.90
  4. Step 4: Simplify right side
    45,122.03x = 1,446,643,763.12
  5. Step 5: Solve for x
    x = 1,446,643,763.12/45,122.03
  6. Step 6: Final answer
    x = 32,060.70

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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.