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Finding the Fourth Proportional to 91,759.94, 126,555.67 and 75,816.71

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Solution

The fourth proportional to 91,759.94, 126,555.67 and 75,816.71 is: 104,566.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,759.94 : 126,555.67 = 75,816.71 : x
  2. Step 2: Convert to fraction form
    91,759.94/126,555.67 = 75,816.71/x
  3. Step 3: Cross multiply
    91,759.94x = 126,555.67 × 75,816.71
  4. Step 4: Simplify right side
    91,759.94x = 9,595,034,531.25
  5. Step 5: Solve for x
    x = 9,595,034,531.25/91,759.94
  6. Step 6: Final answer
    x = 104,566.70

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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.