Home / 39,661.48-54,789.78-31,693.24

Finding the Fourth Proportional to 39,661.48, 54,789.78 and 31,693.24

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Solution

The fourth proportional to 39,661.48, 54,789.78 and 31,693.24 is: 43,782.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,661.48 : 54,789.78 = 31,693.24 : x
  2. Step 2: Convert to fraction form
    39,661.48/54,789.78 = 31,693.24/x
  3. Step 3: Cross multiply
    39,661.48x = 54,789.78 × 31,693.24
  4. Step 4: Simplify right side
    39,661.48x = 1,736,465,647.09
  5. Step 5: Solve for x
    x = 1,736,465,647.09/39,661.48
  6. Step 6: Final answer
    x = 43,782.17

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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.