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Finding the Fourth Proportional to 79,278.56, 109,403.57 and 43,468.49

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Solution

The fourth proportional to 79,278.56, 109,403.57 and 43,468.49 is: 59,986.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,278.56 : 109,403.57 = 43,468.49 : x
  2. Step 2: Convert to fraction form
    79,278.56/109,403.57 = 43,468.49/x
  3. Step 3: Cross multiply
    79,278.56x = 109,403.57 × 43,468.49
  4. Step 4: Simplify right side
    79,278.56x = 4,755,607,224.15
  5. Step 5: Solve for x
    x = 4,755,607,224.15/79,278.56
  6. Step 6: Final answer
    x = 59,986.05

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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.