Home / 86,243.18-118,972.04-50,409.78

Finding the Fourth Proportional to 86,243.18, 118,972.04 and 50,409.78

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Solution

The fourth proportional to 86,243.18, 118,972.04 and 50,409.78 is: 69,540.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,243.18 : 118,972.04 = 50,409.78 : x
  2. Step 2: Convert to fraction form
    86,243.18/118,972.04 = 50,409.78/x
  3. Step 3: Cross multiply
    86,243.18x = 118,972.04 × 50,409.78
  4. Step 4: Simplify right side
    86,243.18x = 5,997,354,362.55
  5. Step 5: Solve for x
    x = 5,997,354,362.55/86,243.18
  6. Step 6: Final answer
    x = 69,540.04

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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.