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Finding the Fourth Proportional to 91,563.75, 126,347.31 and 53,331.68

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Solution

The fourth proportional to 91,563.75, 126,347.31 and 53,331.68 is: 73,591.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,563.75 : 126,347.31 = 53,331.68 : x
  2. Step 2: Convert to fraction form
    91,563.75/126,347.31 = 53,331.68/x
  3. Step 3: Cross multiply
    91,563.75x = 126,347.31 × 53,331.68
  4. Step 4: Simplify right side
    91,563.75x = 6,738,314,621.65
  5. Step 5: Solve for x
    x = 6,738,314,621.65/91,563.75
  6. Step 6: Final answer
    x = 73,591.51

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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.