Home / 80,831.40-111,560.52-61,674.90

Finding the Fourth Proportional to 80,831.40, 111,560.52 and 61,674.90

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Solution

The fourth proportional to 80,831.40, 111,560.52 and 61,674.90 is: 85,121.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,831.40 : 111,560.52 = 61,674.90 : x
  2. Step 2: Convert to fraction form
    80,831.40/111,560.52 = 61,674.90/x
  3. Step 3: Cross multiply
    80,831.40x = 111,560.52 × 61,674.90
  4. Step 4: Simplify right side
    80,831.40x = 6,880,483,914.95
  5. Step 5: Solve for x
    x = 6,880,483,914.95/80,831.40
  6. Step 6: Final answer
    x = 85,121.42

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1.5x scale

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.