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Finding the Fourth Proportional to 71,760.40, 107,621.40 and 25,008.40

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Solution

The fourth proportional to 71,760.40, 107,621.40 and 25,008.40 is: 37,505.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,760.40 : 107,621.40 = 25,008.40 : x
  2. Step 2: Convert to fraction form
    71,760.40/107,621.40 = 25,008.40/x
  3. Step 3: Cross multiply
    71,760.40x = 107,621.40 × 25,008.40
  4. Step 4: Simplify right side
    71,760.40x = 2,691,439,019.76
  5. Step 5: Solve for x
    x = 2,691,439,019.76/71,760.40
  6. Step 6: Final answer
    x = 37,505.91

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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.