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Finding the Fourth Proportional to 71,313.60, 107,047.20 and 40,209.60

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Solution

The fourth proportional to 71,313.60, 107,047.20 and 40,209.60 is: 60,357.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,313.60 : 107,047.20 = 40,209.60 : x
  2. Step 2: Convert to fraction form
    71,313.60/107,047.20 = 40,209.60/x
  3. Step 3: Cross multiply
    71,313.60x = 107,047.20 × 40,209.60
  4. Step 4: Simplify right side
    71,313.60x = 4,304,325,093.12
  5. Step 5: Solve for x
    x = 4,304,325,093.12/71,313.60
  6. Step 6: Final answer
    x = 60,357.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.