Home / 71,218.86-98,282.61-39,388.38

Finding the Fourth Proportional to 71,218.86, 98,282.61 and 39,388.38

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Solution

The fourth proportional to 71,218.86, 98,282.61 and 39,388.38 is: 54,356.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,218.86 : 98,282.61 = 39,388.38 : x
  2. Step 2: Convert to fraction form
    71,218.86/98,282.61 = 39,388.38/x
  3. Step 3: Cross multiply
    71,218.86x = 98,282.61 × 39,388.38
  4. Step 4: Simplify right side
    71,218.86x = 3,871,192,790.07
  5. Step 5: Solve for x
    x = 3,871,192,790.07/71,218.86
  6. Step 6: Final answer
    x = 54,356.29

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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.