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Finding the Fourth Proportional to 66,172.44, 91,317.79 and 35,957.76

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Solution

The fourth proportional to 66,172.44, 91,317.79 and 35,957.76 is: 49,621.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,172.44 : 91,317.79 = 35,957.76 : x
  2. Step 2: Convert to fraction form
    66,172.44/91,317.79 = 35,957.76/x
  3. Step 3: Cross multiply
    66,172.44x = 91,317.79 × 35,957.76
  4. Step 4: Simplify right side
    66,172.44x = 3,283,583,176.55
  5. Step 5: Solve for x
    x = 3,283,583,176.55/66,172.44
  6. Step 6: Final answer
    x = 49,621.61

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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.