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Finding the Fourth Proportional to 66,575.72, 91,748.22 and 47,680.04

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Solution

The fourth proportional to 66,575.72, 91,748.22 and 47,680.04 is: 65,708.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,575.72 : 91,748.22 = 47,680.04 : x
  2. Step 2: Convert to fraction form
    66,575.72/91,748.22 = 47,680.04/x
  3. Step 3: Cross multiply
    66,575.72x = 91,748.22 × 47,680.04
  4. Step 4: Simplify right side
    66,575.72x = 4,374,558,799.53
  5. Step 5: Solve for x
    x = 4,374,558,799.53/66,575.72
  6. Step 6: Final answer
    x = 65,708.02

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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.