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Finding the Fourth Proportional to 66,209.60, 91,369.08 and 35,994.92

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Solution

The fourth proportional to 66,209.60, 91,369.08 and 35,994.92 is: 49,672.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,209.60 : 91,369.08 = 35,994.92 : x
  2. Step 2: Convert to fraction form
    66,209.60/91,369.08 = 35,994.92/x
  3. Step 3: Cross multiply
    66,209.60x = 91,369.08 × 35,994.92
  4. Step 4: Simplify right side
    66,209.60x = 3,288,822,725.07
  5. Step 5: Solve for x
    x = 3,288,822,725.07/66,209.60
  6. Step 6: Final answer
    x = 49,672.90

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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.