Home / 91,428.68-126,183.70-51,157.88

Finding the Fourth Proportional to 91,428.68, 126,183.70 and 51,157.88

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Solution

The fourth proportional to 91,428.68, 126,183.70 and 51,157.88 is: 70,604.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,428.68 : 126,183.70 = 51,157.88 : x
  2. Step 2: Convert to fraction form
    91,428.68/126,183.70 = 51,157.88/x
  3. Step 3: Cross multiply
    91,428.68x = 126,183.70 × 51,157.88
  4. Step 4: Simplify right side
    91,428.68x = 6,455,290,582.56
  5. Step 5: Solve for x
    x = 6,455,290,582.56/91,428.68
  6. Step 6: Final answer
    x = 70,604.66

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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.