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Finding the Fourth Proportional to 79,188.35, 109,279.92 and 43,378.35

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Solution

The fourth proportional to 79,188.35, 109,279.92 and 43,378.35 is: 59,862.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,188.35 : 109,279.92 = 43,378.35 : x
  2. Step 2: Convert to fraction form
    79,188.35/109,279.92 = 43,378.35/x
  3. Step 3: Cross multiply
    79,188.35x = 109,279.92 × 43,378.35
  4. Step 4: Simplify right side
    79,188.35x = 4,740,382,741.30
  5. Step 5: Solve for x
    x = 4,740,382,741.30/79,188.35
  6. Step 6: Final answer
    x = 59,862.12

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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.