Home / 66,621.17-91,936.09-36,405.83

Finding the Fourth Proportional to 66,621.17, 91,936.09 and 36,405.83

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Solution

The fourth proportional to 66,621.17, 91,936.09 and 36,405.83 is: 50,239.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,621.17 : 91,936.09 = 36,405.83 : x
  2. Step 2: Convert to fraction form
    66,621.17/91,936.09 = 36,405.83/x
  3. Step 3: Cross multiply
    66,621.17x = 91,936.09 × 36,405.83
  4. Step 4: Simplify right side
    66,621.17x = 3,347,009,663.40
  5. Step 5: Solve for x
    x = 3,347,009,663.40/66,621.17
  6. Step 6: Final answer
    x = 50,239.43

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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.