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Finding the Fourth Proportional to 66,292.94, 99,439.41 and 54,581.55

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Solution

The fourth proportional to 66,292.94, 99,439.41 and 54,581.55 is: 81,872.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,292.94 : 99,439.41 = 54,581.55 : x
  2. Step 2: Convert to fraction form
    66,292.94/99,439.41 = 54,581.55/x
  3. Step 3: Cross multiply
    66,292.94x = 99,439.41 × 54,581.55
  4. Step 4: Simplify right side
    66,292.94x = 5,427,557,212.99
  5. Step 5: Solve for x
    x = 5,427,557,212.99/66,292.94
  6. Step 6: Final answer
    x = 81,872.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.