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Finding the Fourth Proportional to 91,363.20, 126,086.40 and 51,619.20

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Solution

The fourth proportional to 91,363.20, 126,086.40 and 51,619.20 is: 71,237.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,363.20 : 126,086.40 = 51,619.20 : x
  2. Step 2: Convert to fraction form
    91,363.20/126,086.40 = 51,619.20/x
  3. Step 3: Cross multiply
    91,363.20x = 126,086.40 × 51,619.20
  4. Step 4: Simplify right side
    91,363.20x = 6,508,479,098.88
  5. Step 5: Solve for x
    x = 6,508,479,098.88/91,363.20
  6. Step 6: Final answer
    x = 71,237.42

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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.