Home / 71,682.14-98,923.90-39,419.20

Finding the Fourth Proportional to 71,682.14, 98,923.90 and 39,419.20

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Solution

The fourth proportional to 71,682.14, 98,923.90 and 39,419.20 is: 54,399.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,682.14 : 98,923.90 = 39,419.20 : x
  2. Step 2: Convert to fraction form
    71,682.14/98,923.90 = 39,419.20/x
  3. Step 3: Cross multiply
    71,682.14x = 98,923.90 × 39,419.20
  4. Step 4: Simplify right side
    71,682.14x = 3,899,500,998.88
  5. Step 5: Solve for x
    x = 3,899,500,998.88/71,682.14
  6. Step 6: Final answer
    x = 54,399.90

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1.5x scale

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.