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Finding the Fourth Proportional to 91,422.46, 126,173.46 and 51,146.43

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Solution

The fourth proportional to 91,422.46, 126,173.46 and 51,146.43 is: 70,587.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,422.46 : 126,173.46 = 51,146.43 : x
  2. Step 2: Convert to fraction form
    91,422.46/126,173.46 = 51,146.43/x
  3. Step 3: Cross multiply
    91,422.46x = 126,173.46 × 51,146.43
  4. Step 4: Simplify right side
    91,422.46x = 6,453,322,039.75
  5. Step 5: Solve for x
    x = 6,453,322,039.75/91,422.46
  6. Step 6: Final answer
    x = 70,587.93

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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.