Home / 65,739.90-90,727.43-38,891.06

Finding the Fourth Proportional to 65,739.90, 90,727.43 and 38,891.06

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Solution

The fourth proportional to 65,739.90, 90,727.43 and 38,891.06 is: 53,673.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,739.90 : 90,727.43 = 38,891.06 : x
  2. Step 2: Convert to fraction form
    65,739.90/90,727.43 = 38,891.06/x
  3. Step 3: Cross multiply
    65,739.90x = 90,727.43 × 38,891.06
  4. Step 4: Simplify right side
    65,739.90x = 3,528,485,923.78
  5. Step 5: Solve for x
    x = 3,528,485,923.78/65,739.90
  6. Step 6: Final answer
    x = 53,673.43

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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.