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Finding the Fourth Proportional to 91,393.28, 126,103.36 and 53,645.44

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Solution

The fourth proportional to 91,393.28, 126,103.36 and 53,645.44 is: 74,019.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,393.28 : 126,103.36 = 53,645.44 : x
  2. Step 2: Convert to fraction form
    91,393.28/126,103.36 = 53,645.44/x
  3. Step 3: Cross multiply
    91,393.28x = 126,103.36 × 53,645.44
  4. Step 4: Simplify right side
    91,393.28x = 6,764,870,232.68
  5. Step 5: Solve for x
    x = 6,764,870,232.68/91,393.28
  6. Step 6: Final answer
    x = 74,019.34

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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.