Home / 80,640.77-111,288.06-44,831.38

Finding the Fourth Proportional to 80,640.77, 111,288.06 and 44,831.38

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Solution

The fourth proportional to 80,640.77, 111,288.06 and 44,831.38 is: 61,869.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,640.77 : 111,288.06 = 44,831.38 : x
  2. Step 2: Convert to fraction form
    80,640.77/111,288.06 = 44,831.38/x
  3. Step 3: Cross multiply
    80,640.77x = 111,288.06 × 44,831.38
  4. Step 4: Simplify right side
    80,640.77x = 4,989,197,307.32
  5. Step 5: Solve for x
    x = 4,989,197,307.32/80,640.77
  6. Step 6: Final answer
    x = 61,869.42

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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.