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Finding the Fourth Proportional to 66,429.34, 91,672.84 and 36,214.72

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Solution

The fourth proportional to 66,429.34, 91,672.84 and 36,214.72 is: 49,976.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,429.34 : 91,672.84 = 36,214.72 : x
  2. Step 2: Convert to fraction form
    66,429.34/91,672.84 = 36,214.72/x
  3. Step 3: Cross multiply
    66,429.34x = 91,672.84 × 36,214.72
  4. Step 4: Simplify right side
    66,429.34x = 3,319,906,232.20
  5. Step 5: Solve for x
    x = 3,319,906,232.20/66,429.34
  6. Step 6: Final answer
    x = 49,976.50

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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.