Home / 80,974.01-111,831.26-61,647.62

Finding the Fourth Proportional to 80,974.01, 111,831.26 and 61,647.62

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Solution

The fourth proportional to 80,974.01, 111,831.26 and 61,647.62 is: 85,140.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,974.01 : 111,831.26 = 61,647.62 : x
  2. Step 2: Convert to fraction form
    80,974.01/111,831.26 = 61,647.62/x
  3. Step 3: Cross multiply
    80,974.01x = 111,831.26 × 61,647.62
  4. Step 4: Simplify right side
    80,974.01x = 6,894,130,153.21
  5. Step 5: Solve for x
    x = 6,894,130,153.21/80,974.01
  6. Step 6: Final answer
    x = 85,140.04

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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.