Home / 45,128.22-67,731.21-21,774.30

Finding the Fourth Proportional to 45,128.22, 67,731.21 and 21,774.30

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Solution

The fourth proportional to 45,128.22, 67,731.21 and 21,774.30 is: 32,680.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,128.22 : 67,731.21 = 21,774.30 : x
  2. Step 2: Convert to fraction form
    45,128.22/67,731.21 = 21,774.30/x
  3. Step 3: Cross multiply
    45,128.22x = 67,731.21 × 21,774.30
  4. Step 4: Simplify right side
    45,128.22x = 1,474,799,685.90
  5. Step 5: Solve for x
    x = 1,474,799,685.90/45,128.22
  6. Step 6: Final answer
    x = 32,680.21

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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.