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Finding the Fourth Proportional to 91,988, 126,943.56 and 52,244

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Solution

The fourth proportional to 91,988, 126,943.56 and 52,244 is: 72,096.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,988 : 126,943.56 = 52,244 : x
  2. Step 2: Convert to fraction form
    91,988/126,943.56 = 52,244/x
  3. Step 3: Cross multiply
    91,988x = 126,943.56 × 52,244
  4. Step 4: Simplify right side
    91,988x = 6,632,039,348.64
  5. Step 5: Solve for x
    x = 6,632,039,348.64/91,988
  6. Step 6: Final answer
    x = 72,096.79

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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.