Home / 71,926.62-107,921.05-38,607.78

Finding the Fourth Proportional to 71,926.62, 107,921.05 and 38,607.78

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Solution

The fourth proportional to 71,926.62, 107,921.05 and 38,607.78 is: 57,928.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,926.62 : 107,921.05 = 38,607.78 : x
  2. Step 2: Convert to fraction form
    71,926.62/107,921.05 = 38,607.78/x
  3. Step 3: Cross multiply
    71,926.62x = 107,921.05 × 38,607.78
  4. Step 4: Simplify right side
    71,926.62x = 4,166,592,074.07
  5. Step 5: Solve for x
    x = 4,166,592,074.07/71,926.62
  6. Step 6: Final answer
    x = 57,928.37

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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.