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Finding the Fourth Proportional to 79,278.41, 109,401.84 and 43,467.20

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Solution

The fourth proportional to 79,278.41, 109,401.84 and 43,467.20 is: 59,983.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,278.41 : 109,401.84 = 43,467.20 : x
  2. Step 2: Convert to fraction form
    79,278.41/109,401.84 = 43,467.20/x
  3. Step 3: Cross multiply
    79,278.41x = 109,401.84 × 43,467.20
  4. Step 4: Simplify right side
    79,278.41x = 4,755,391,522.90
  5. Step 5: Solve for x
    x = 4,755,391,522.90/79,278.41
  6. Step 6: Final answer
    x = 59,983.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.