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Finding the Fourth Proportional to 91,796.87, 126,760.46 and 57,400.55

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Solution

The fourth proportional to 91,796.87, 126,760.46 and 57,400.55 is: 79,263.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,796.87 : 126,760.46 = 57,400.55 : x
  2. Step 2: Convert to fraction form
    91,796.87/126,760.46 = 57,400.55/x
  3. Step 3: Cross multiply
    91,796.87x = 126,760.46 × 57,400.55
  4. Step 4: Simplify right side
    91,796.87x = 7,276,119,201.45
  5. Step 5: Solve for x
    x = 7,276,119,201.45/91,796.87
  6. Step 6: Final answer
    x = 79,263.26

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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.