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Finding the Fourth Proportional to 79,328, 109,474.08 and 43,519.84

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Solution

The fourth proportional to 79,328, 109,474.08 and 43,519.84 is: 60,058.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,328 : 109,474.08 = 43,519.84 : x
  2. Step 2: Convert to fraction form
    79,328/109,474.08 = 43,519.84/x
  3. Step 3: Cross multiply
    79,328x = 109,474.08 × 43,519.84
  4. Step 4: Simplify right side
    79,328x = 4,764,294,445.75
  5. Step 5: Solve for x
    x = 4,764,294,445.75/79,328
  6. Step 6: Final answer
    x = 60,058.17

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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.