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Finding the Fourth Proportional to 91,422.37, 126,174.55 and 51,138.37

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Solution

The fourth proportional to 91,422.37, 126,174.55 and 51,138.37 is: 70,577.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,422.37 : 126,174.55 = 51,138.37 : x
  2. Step 2: Convert to fraction form
    91,422.37/126,174.55 = 51,138.37/x
  3. Step 3: Cross multiply
    91,422.37x = 126,174.55 × 51,138.37
  4. Step 4: Simplify right side
    91,422.37x = 6,452,360,191.61
  5. Step 5: Solve for x
    x = 6,452,360,191.61/91,422.37
  6. Step 6: Final answer
    x = 70,577.48

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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.