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Finding the Fourth Proportional to 91,143.54, 125,825.39 and 66,586.82

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Solution

The fourth proportional to 91,143.54, 125,825.39 and 66,586.82 is: 91,924.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,143.54 : 125,825.39 = 66,586.82 : x
  2. Step 2: Convert to fraction form
    91,143.54/125,825.39 = 66,586.82/x
  3. Step 3: Cross multiply
    91,143.54x = 125,825.39 × 66,586.82
  4. Step 4: Simplify right side
    91,143.54x = 8,378,311,633.30
  5. Step 5: Solve for x
    x = 8,378,311,633.30/91,143.54
  6. Step 6: Final answer
    x = 91,924.36

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1.5x scale

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.