Home / 71,238.13-98,308.22-39,406.34

Finding the Fourth Proportional to 71,238.13, 98,308.22 and 39,406.34

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Solution

The fourth proportional to 71,238.13, 98,308.22 and 39,406.34 is: 54,380.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,238.13 : 98,308.22 = 39,406.34 : x
  2. Step 2: Convert to fraction form
    71,238.13/98,308.22 = 39,406.34/x
  3. Step 3: Cross multiply
    71,238.13x = 98,308.22 × 39,406.34
  4. Step 4: Simplify right side
    71,238.13x = 3,873,967,190.85
  5. Step 5: Solve for x
    x = 3,873,967,190.85/71,238.13
  6. Step 6: Final answer
    x = 54,380.53

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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.