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Finding the Fourth Proportional to 66,821.12, 92,212.04 and 36,606.16

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Solution

The fourth proportional to 66,821.12, 92,212.04 and 36,606.16 is: 50,515.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,821.12 : 92,212.04 = 36,606.16 : x
  2. Step 2: Convert to fraction form
    66,821.12/92,212.04 = 36,606.16/x
  3. Step 3: Cross multiply
    66,821.12x = 92,212.04 × 36,606.16
  4. Step 4: Simplify right side
    66,821.12x = 3,375,528,690.17
  5. Step 5: Solve for x
    x = 3,375,528,690.17/66,821.12
  6. Step 6: Final answer
    x = 50,515.90

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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.