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Finding the Fourth Proportional to 90,846.77, 125,381.79 and 54,550.67

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Solution

The fourth proportional to 90,846.77, 125,381.79 and 54,550.67 is: 75,287.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,846.77 : 125,381.79 = 54,550.67 : x
  2. Step 2: Convert to fraction form
    90,846.77/125,381.79 = 54,550.67/x
  3. Step 3: Cross multiply
    90,846.77x = 125,381.79 × 54,550.67
  4. Step 4: Simplify right side
    90,846.77x = 6,839,660,023.39
  5. Step 5: Solve for x
    x = 6,839,660,023.39/90,846.77
  6. Step 6: Final answer
    x = 75,287.88

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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.