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Finding the Fourth Proportional to 66,508.58, 91,797.60 and 38,230.70

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Solution

The fourth proportional to 66,508.58, 91,797.60 and 38,230.70 is: 52,767.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,508.58 : 91,797.60 = 38,230.70 : x
  2. Step 2: Convert to fraction form
    66,508.58/91,797.60 = 38,230.70/x
  3. Step 3: Cross multiply
    66,508.58x = 91,797.60 × 38,230.70
  4. Step 4: Simplify right side
    66,508.58x = 3,509,486,506.32
  5. Step 5: Solve for x
    x = 3,509,486,506.32/66,508.58
  6. Step 6: Final answer
    x = 52,767.42

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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.