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Finding the Fourth Proportional to 91,940.40, 126,873 and 51,655.92

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Solution

The fourth proportional to 91,940.40, 126,873 and 51,655.92 is: 71,282.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,940.40 : 126,873 = 51,655.92 : x
  2. Step 2: Convert to fraction form
    91,940.40/126,873 = 51,655.92/x
  3. Step 3: Cross multiply
    91,940.40x = 126,873 × 51,655.92
  4. Step 4: Simplify right side
    91,940.40x = 6,553,741,538.16
  5. Step 5: Solve for x
    x = 6,553,741,538.16/91,940.40
  6. Step 6: Final answer
    x = 71,282.50

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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.