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Finding the Fourth Proportional to 66,281.16, 91,467 and 36,066.78

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Solution

The fourth proportional to 66,281.16, 91,467 and 36,066.78 is: 49,771.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,281.16 : 91,467 = 36,066.78 : x
  2. Step 2: Convert to fraction form
    66,281.16/91,467 = 36,066.78/x
  3. Step 3: Cross multiply
    66,281.16x = 91,467 × 36,066.78
  4. Step 4: Simplify right side
    66,281.16x = 3,298,920,166.26
  5. Step 5: Solve for x
    x = 3,298,920,166.26/66,281.16
  6. Step 6: Final answer
    x = 49,771.61

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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.