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Finding the Fourth Proportional to 66,071.96, 91,179.98 and 35,857.55

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Solution

The fourth proportional to 66,071.96, 91,179.98 and 35,857.55 is: 49,483.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,071.96 : 91,179.98 = 35,857.55 : x
  2. Step 2: Convert to fraction form
    66,071.96/91,179.98 = 35,857.55/x
  3. Step 3: Cross multiply
    66,071.96x = 91,179.98 × 35,857.55
  4. Step 4: Simplify right side
    66,071.96x = 3,269,490,056.66
  5. Step 5: Solve for x
    x = 3,269,490,056.66/66,071.96
  6. Step 6: Final answer
    x = 49,483.78

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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.