Home / 63,021.19-86,965.80-39,147.43

Finding the Fourth Proportional to 63,021.19, 86,965.80 and 39,147.43

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Solution

The fourth proportional to 63,021.19, 86,965.80 and 39,147.43 is: 54,021.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,021.19 : 86,965.80 = 39,147.43 : x
  2. Step 2: Convert to fraction form
    63,021.19/86,965.80 = 39,147.43/x
  3. Step 3: Cross multiply
    63,021.19x = 86,965.80 × 39,147.43
  4. Step 4: Simplify right side
    63,021.19x = 3,404,487,133.07
  5. Step 5: Solve for x
    x = 3,404,487,133.07/63,021.19
  6. Step 6: Final answer
    x = 54,021.31

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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.