Home / 66,621.18-91,936.10-36,405.84

Finding the Fourth Proportional to 66,621.18, 91,936.10 and 36,405.84

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Solution

The fourth proportional to 66,621.18, 91,936.10 and 36,405.84 is: 50,239.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,621.18 : 91,936.10 = 36,405.84 : x
  2. Step 2: Convert to fraction form
    66,621.18/91,936.10 = 36,405.84/x
  3. Step 3: Cross multiply
    66,621.18x = 91,936.10 × 36,405.84
  4. Step 4: Simplify right side
    66,621.18x = 3,347,010,946.82
  5. Step 5: Solve for x
    x = 3,347,010,946.82/66,621.18
  6. Step 6: Final answer
    x = 50,239.44

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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.