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Finding the Fourth Proportional to 66,323, 91,525.78 and 36,515

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Solution

The fourth proportional to 66,323, 91,525.78 and 36,515 is: 50,390.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,323 : 91,525.78 = 36,515 : x
  2. Step 2: Convert to fraction form
    66,323/91,525.78 = 36,515/x
  3. Step 3: Cross multiply
    66,323x = 91,525.78 × 36,515
  4. Step 4: Simplify right side
    66,323x = 3,342,063,856.70
  5. Step 5: Solve for x
    x = 3,342,063,856.70/66,323
  6. Step 6: Final answer
    x = 50,390.72

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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.