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Finding the Fourth Proportional to 71,915.65, 107,873.44 and 21,995.75

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Solution

The fourth proportional to 71,915.65, 107,873.44 and 21,995.75 is: 32,993.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,915.65 : 107,873.44 = 21,995.75 : x
  2. Step 2: Convert to fraction form
    71,915.65/107,873.44 = 21,995.75/x
  3. Step 3: Cross multiply
    71,915.65x = 107,873.44 × 21,995.75
  4. Step 4: Simplify right side
    71,915.65x = 2,372,757,432.57
  5. Step 5: Solve for x
    x = 2,372,757,432.57/71,915.65
  6. Step 6: Final answer
    x = 32,993.62

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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.