Home / 71,102.28-98,121.70-39,271.70

Finding the Fourth Proportional to 71,102.28, 98,121.70 and 39,271.70

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Solution

The fourth proportional to 71,102.28, 98,121.70 and 39,271.70 is: 54,195.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,102.28 : 98,121.70 = 39,271.70 : x
  2. Step 2: Convert to fraction form
    71,102.28/98,121.70 = 39,271.70/x
  3. Step 3: Cross multiply
    71,102.28x = 98,121.70 × 39,271.70
  4. Step 4: Simplify right side
    71,102.28x = 3,853,405,965.89
  5. Step 5: Solve for x
    x = 3,853,405,965.89/71,102.28
  6. Step 6: Final answer
    x = 54,195.25

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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.