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Finding the Fourth Proportional to 66,608.28, 91,922.22 and 38,313.99

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Solution

The fourth proportional to 66,608.28, 91,922.22 and 38,313.99 is: 52,874.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,608.28 : 91,922.22 = 38,313.99 : x
  2. Step 2: Convert to fraction form
    66,608.28/91,922.22 = 38,313.99/x
  3. Step 3: Cross multiply
    66,608.28x = 91,922.22 × 38,313.99
  4. Step 4: Simplify right side
    66,608.28x = 3,521,907,017.86
  5. Step 5: Solve for x
    x = 3,521,907,017.86/66,608.28
  6. Step 6: Final answer
    x = 52,874.91

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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.