Home / 71,021.82-98,010.40-39,191.64

Finding the Fourth Proportional to 71,021.82, 98,010.40 and 39,191.64

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Solution

The fourth proportional to 71,021.82, 98,010.40 and 39,191.64 is: 54,084.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,021.82 : 98,010.40 = 39,191.64 : x
  2. Step 2: Convert to fraction form
    71,021.82/98,010.40 = 39,191.64/x
  3. Step 3: Cross multiply
    71,021.82x = 98,010.40 × 39,191.64
  4. Step 4: Simplify right side
    71,021.82x = 3,841,188,313.06
  5. Step 5: Solve for x
    x = 3,841,188,313.06/71,021.82
  6. Step 6: Final answer
    x = 54,084.62

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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.