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Finding the Fourth Proportional to 66,571.28, 91,868.28 and 36,763.28

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Solution

The fourth proportional to 66,571.28, 91,868.28 and 36,763.28 is: 50,733.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,571.28 : 91,868.28 = 36,763.28 : x
  2. Step 2: Convert to fraction form
    66,571.28/91,868.28 = 36,763.28/x
  3. Step 3: Cross multiply
    66,571.28x = 91,868.28 × 36,763.28
  4. Step 4: Simplify right side
    66,571.28x = 3,377,379,300.76
  5. Step 5: Solve for x
    x = 3,377,379,300.76/66,571.28
  6. Step 6: Final answer
    x = 50,733.28

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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.