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Finding the Fourth Proportional to 66,205.44, 91,365.12 and 37,920.24

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Solution

The fourth proportional to 66,205.44, 91,365.12 and 37,920.24 is: 52,330.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,205.44 : 91,365.12 = 37,920.24 : x
  2. Step 2: Convert to fraction form
    66,205.44/91,365.12 = 37,920.24/x
  3. Step 3: Cross multiply
    66,205.44x = 91,365.12 × 37,920.24
  4. Step 4: Simplify right side
    66,205.44x = 3,464,587,278.03
  5. Step 5: Solve for x
    x = 3,464,587,278.03/66,205.44
  6. Step 6: Final answer
    x = 52,330.85

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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.