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Finding the Fourth Proportional to 91,513.89, 126,294.78 and 51,230.16

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Solution

The fourth proportional to 91,513.89, 126,294.78 and 51,230.16 is: 70,700.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,513.89 : 126,294.78 = 51,230.16 : x
  2. Step 2: Convert to fraction form
    91,513.89/126,294.78 = 51,230.16/x
  3. Step 3: Cross multiply
    91,513.89x = 126,294.78 × 51,230.16
  4. Step 4: Simplify right side
    91,513.89x = 6,470,101,786.56
  5. Step 5: Solve for x
    x = 6,470,101,786.56/91,513.89
  6. Step 6: Final answer
    x = 70,700.76

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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.