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Finding the Fourth Proportional to 79,515.87, 109,734.78 and 43,708.60

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Solution

The fourth proportional to 79,515.87, 109,734.78 and 43,708.60 is: 60,319.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,515.87 : 109,734.78 = 43,708.60 : x
  2. Step 2: Convert to fraction form
    79,515.87/109,734.78 = 43,708.60/x
  3. Step 3: Cross multiply
    79,515.87x = 109,734.78 × 43,708.60
  4. Step 4: Simplify right side
    79,515.87x = 4,796,353,605.11
  5. Step 5: Solve for x
    x = 4,796,353,605.11/79,515.87
  6. Step 6: Final answer
    x = 60,319.45

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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.