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Finding the Fourth Proportional to 66,508.64, 91,774.41 and 38,223.44

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Solution

The fourth proportional to 66,508.64, 91,774.41 and 38,223.44 is: 52,744.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,508.64 : 91,774.41 = 38,223.44 : x
  2. Step 2: Convert to fraction form
    66,508.64/91,774.41 = 38,223.44/x
  3. Step 3: Cross multiply
    66,508.64x = 91,774.41 × 38,223.44
  4. Step 4: Simplify right side
    66,508.64x = 3,507,933,788.05
  5. Step 5: Solve for x
    x = 3,507,933,788.05/66,508.64
  6. Step 6: Final answer
    x = 52,744.03

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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.