Home / 71,984.10-99,337.38-39,719.02

Finding the Fourth Proportional to 71,984.10, 99,337.38 and 39,719.02

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Solution

The fourth proportional to 71,984.10, 99,337.38 and 39,719.02 is: 54,811.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,984.10 : 99,337.38 = 39,719.02 : x
  2. Step 2: Convert to fraction form
    71,984.10/99,337.38 = 39,719.02/x
  3. Step 3: Cross multiply
    71,984.10x = 99,337.38 × 39,719.02
  4. Step 4: Simplify right side
    71,984.10x = 3,945,583,382.97
  5. Step 5: Solve for x
    x = 3,945,583,382.97/71,984.10
  6. Step 6: Final answer
    x = 54,811.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.