Home / 71,979.27-107,956.60-19,376.45

Finding the Fourth Proportional to 71,979.27, 107,956.60 and 19,376.45

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Solution

The fourth proportional to 71,979.27, 107,956.60 and 19,376.45 is: 29,061.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,979.27 : 107,956.60 = 19,376.45 : x
  2. Step 2: Convert to fraction form
    71,979.27/107,956.60 = 19,376.45/x
  3. Step 3: Cross multiply
    71,979.27x = 107,956.60 × 19,376.45
  4. Step 4: Simplify right side
    71,979.27x = 2,091,815,662.07
  5. Step 5: Solve for x
    x = 2,091,815,662.07/71,979.27
  6. Step 6: Final answer
    x = 29,061.36

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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.