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Finding the Fourth Proportional to 71,969.40, 107,954.10 and 25,216.20

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Solution

The fourth proportional to 71,969.40, 107,954.10 and 25,216.20 is: 37,824.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,969.40 : 107,954.10 = 25,216.20 : x
  2. Step 2: Convert to fraction form
    71,969.40/107,954.10 = 25,216.20/x
  3. Step 3: Cross multiply
    71,969.40x = 107,954.10 × 25,216.20
  4. Step 4: Simplify right side
    71,969.40x = 2,722,192,176.42
  5. Step 5: Solve for x
    x = 2,722,192,176.42/71,969.40
  6. Step 6: Final answer
    x = 37,824.30

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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.