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Finding the Fourth Proportional to 66,400.93, 91,629.75 and 38,104.75

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Solution

The fourth proportional to 66,400.93, 91,629.75 and 38,104.75 is: 52,582.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,400.93 : 91,629.75 = 38,104.75 : x
  2. Step 2: Convert to fraction form
    66,400.93/91,629.75 = 38,104.75/x
  3. Step 3: Cross multiply
    66,400.93x = 91,629.75 × 38,104.75
  4. Step 4: Simplify right side
    66,400.93x = 3,491,528,716.31
  5. Step 5: Solve for x
    x = 3,491,528,716.31/66,400.93
  6. Step 6: Final answer
    x = 52,582.53

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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.