Home / 65,943.38-90,991.59-39,081.56

Finding the Fourth Proportional to 65,943.38, 90,991.59 and 39,081.56

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Solution

The fourth proportional to 65,943.38, 90,991.59 and 39,081.56 is: 53,926.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,943.38 : 90,991.59 = 39,081.56 : x
  2. Step 2: Convert to fraction form
    65,943.38/90,991.59 = 39,081.56/x
  3. Step 3: Cross multiply
    65,943.38x = 90,991.59 × 39,081.56
  4. Step 4: Simplify right side
    65,943.38x = 3,556,092,829.12
  5. Step 5: Solve for x
    x = 3,556,092,829.12/65,943.38
  6. Step 6: Final answer
    x = 53,926.45

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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.