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Finding the Fourth Proportional to 66,912.55, 92,330.89 and 36,689.92

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Solution

The fourth proportional to 66,912.55, 92,330.89 and 36,689.92 is: 50,627.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,912.55 : 92,330.89 = 36,689.92 : x
  2. Step 2: Convert to fraction form
    66,912.55/92,330.89 = 36,689.92/x
  3. Step 3: Cross multiply
    66,912.55x = 92,330.89 × 36,689.92
  4. Step 4: Simplify right side
    66,912.55x = 3,387,612,967.63
  5. Step 5: Solve for x
    x = 3,387,612,967.63/66,912.55
  6. Step 6: Final answer
    x = 50,627.47

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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.