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Finding the Fourth Proportional to 71,964.40, 107,946.60 and 25,211.20

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Solution

The fourth proportional to 71,964.40, 107,946.60 and 25,211.20 is: 37,816.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,964.40 : 107,946.60 = 25,211.20 : x
  2. Step 2: Convert to fraction form
    71,964.40/107,946.60 = 25,211.20/x
  3. Step 3: Cross multiply
    71,964.40x = 107,946.60 × 25,211.20
  4. Step 4: Simplify right side
    71,964.40x = 2,721,463,321.92
  5. Step 5: Solve for x
    x = 2,721,463,321.92/71,964.40
  6. Step 6: Final answer
    x = 37,816.80

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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.