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Finding the Fourth Proportional to 79,088.75, 109,137.90 and 43,279.46

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Solution

The fourth proportional to 79,088.75, 109,137.90 and 43,279.46 is: 59,723.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,088.75 : 109,137.90 = 43,279.46 : x
  2. Step 2: Convert to fraction form
    79,088.75/109,137.90 = 43,279.46/x
  3. Step 3: Cross multiply
    79,088.75x = 109,137.90 × 43,279.46
  4. Step 4: Simplify right side
    79,088.75x = 4,723,429,377.53
  5. Step 5: Solve for x
    x = 4,723,429,377.53/79,088.75
  6. Step 6: Final answer
    x = 59,723.15

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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.