Home / 55,971.78-83,968.75-15,991.11

Finding the Fourth Proportional to 55,971.78, 83,968.75 and 15,991.11

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Solution

The fourth proportional to 55,971.78, 83,968.75 and 15,991.11 is: 23,989.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,971.78 : 83,968.75 = 15,991.11 : x
  2. Step 2: Convert to fraction form
    55,971.78/83,968.75 = 15,991.11/x
  3. Step 3: Cross multiply
    55,971.78x = 83,968.75 × 15,991.11
  4. Step 4: Simplify right side
    55,971.78x = 1,342,753,517.81
  5. Step 5: Solve for x
    x = 1,342,753,517.81/55,971.78
  6. Step 6: Final answer
    x = 23,989.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.