Home / 66,011.28-91,074.54-40,491.42

Finding the Fourth Proportional to 66,011.28, 91,074.54 and 40,491.42

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Solution

The fourth proportional to 66,011.28, 91,074.54 and 40,491.42 is: 55,865.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,011.28 : 91,074.54 = 40,491.42 : x
  2. Step 2: Convert to fraction form
    66,011.28/91,074.54 = 40,491.42/x
  3. Step 3: Cross multiply
    66,011.28x = 91,074.54 × 40,491.42
  4. Step 4: Simplify right side
    66,011.28x = 3,687,737,450.45
  5. Step 5: Solve for x
    x = 3,687,737,450.45/66,011.28
  6. Step 6: Final answer
    x = 55,865.26

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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.