Home / 79,539.78-119,306.91-20,376.03

Finding the Fourth Proportional to 79,539.78, 119,306.91 and 20,376.03

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Solution

The fourth proportional to 79,539.78, 119,306.91 and 20,376.03 is: 30,563.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,539.78 : 119,306.91 = 20,376.03 : x
  2. Step 2: Convert to fraction form
    79,539.78/119,306.91 = 20,376.03/x
  3. Step 3: Cross multiply
    79,539.78x = 119,306.91 × 20,376.03
  4. Step 4: Simplify right side
    79,539.78x = 2,431,001,177.37
  5. Step 5: Solve for x
    x = 2,431,001,177.37/79,539.78
  6. Step 6: Final answer
    x = 30,563.34

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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.