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Finding the Fourth Proportional to 79,109.60, 109,171.30 and 43,299.60

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Solution

The fourth proportional to 79,109.60, 109,171.30 and 43,299.60 is: 59,753.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,109.60 : 109,171.30 = 43,299.60 : x
  2. Step 2: Convert to fraction form
    79,109.60/109,171.30 = 43,299.60/x
  3. Step 3: Cross multiply
    79,109.60x = 109,171.30 × 43,299.60
  4. Step 4: Simplify right side
    79,109.60x = 4,727,073,621.48
  5. Step 5: Solve for x
    x = 4,727,073,621.48/79,109.60
  6. Step 6: Final answer
    x = 59,753.48

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1.5x scale

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.