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Finding the Fourth Proportional to 50,048.78, 69,065.03 and 28,831.10

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Solution

The fourth proportional to 50,048.78, 69,065.03 and 28,831.10 is: 39,785.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,048.78 : 69,065.03 = 28,831.10 : x
  2. Step 2: Convert to fraction form
    50,048.78/69,065.03 = 28,831.10/x
  3. Step 3: Cross multiply
    50,048.78x = 69,065.03 × 28,831.10
  4. Step 4: Simplify right side
    50,048.78x = 1,991,220,786.43
  5. Step 5: Solve for x
    x = 1,991,220,786.43/50,048.78
  6. Step 6: Final answer
    x = 39,785.60

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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.