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Finding the Fourth Proportional to 66,283.25, 99,424.87 and 54,571.86

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Solution

The fourth proportional to 66,283.25, 99,424.87 and 54,571.86 is: 81,857.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,283.25 : 99,424.87 = 54,571.86 : x
  2. Step 2: Convert to fraction form
    66,283.25/99,424.87 = 54,571.86/x
  3. Step 3: Cross multiply
    66,283.25x = 99,424.87 × 54,571.86
  4. Step 4: Simplify right side
    66,283.25x = 5,425,800,086.16
  5. Step 5: Solve for x
    x = 5,425,800,086.16/66,283.25
  6. Step 6: Final answer
    x = 81,857.79

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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.