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Finding the Fourth Proportional to 50,811, 70,121.34 and 29,586.84

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Solution

The fourth proportional to 50,811, 70,121.34 and 29,586.84 is: 40,831.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,811 : 70,121.34 = 29,586.84 : x
  2. Step 2: Convert to fraction form
    50,811/70,121.34 = 29,586.84/x
  3. Step 3: Cross multiply
    50,811x = 70,121.34 × 29,586.84
  4. Step 4: Simplify right side
    50,811x = 2,074,668,867.17
  5. Step 5: Solve for x
    x = 2,074,668,867.17/50,811
  6. Step 6: Final answer
    x = 40,831.10

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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.