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Finding the Fourth Proportional to 66,622.80, 91,949.52 and 38,326.68

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Solution

The fourth proportional to 66,622.80, 91,949.52 and 38,326.68 is: 52,896.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,622.80 : 91,949.52 = 38,326.68 : x
  2. Step 2: Convert to fraction form
    66,622.80/91,949.52 = 38,326.68/x
  3. Step 3: Cross multiply
    66,622.80x = 91,949.52 × 38,326.68
  4. Step 4: Simplify right side
    66,622.80x = 3,524,119,829.19
  5. Step 5: Solve for x
    x = 3,524,119,829.19/66,622.80
  6. Step 6: Final answer
    x = 52,896.60

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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.