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Finding the Fourth Proportional to 45,374, 68,090.20 and 17,672

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Solution

The fourth proportional to 45,374, 68,090.20 and 17,672 is: 26,519.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,374 : 68,090.20 = 17,672 : x
  2. Step 2: Convert to fraction form
    45,374/68,090.20 = 17,672/x
  3. Step 3: Cross multiply
    45,374x = 68,090.20 × 17,672
  4. Step 4: Simplify right side
    45,374x = 1,203,290,014.40
  5. Step 5: Solve for x
    x = 1,203,290,014.40/45,374
  6. Step 6: Final answer
    x = 26,519.37

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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.