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Finding the Fourth Proportional to 91,795.68, 126,709.92 and 54,067.50

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Solution

The fourth proportional to 91,795.68, 126,709.92 and 54,067.50 is: 74,631.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,795.68 : 126,709.92 = 54,067.50 : x
  2. Step 2: Convert to fraction form
    91,795.68/126,709.92 = 54,067.50/x
  3. Step 3: Cross multiply
    91,795.68x = 126,709.92 × 54,067.50
  4. Step 4: Simplify right side
    91,795.68x = 6,850,888,599.60
  5. Step 5: Solve for x
    x = 6,850,888,599.60/91,795.68
  6. Step 6: Final answer
    x = 74,631.93

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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.