Home / 66,621.12-91,940.88-36,409.20

Finding the Fourth Proportional to 66,621.12, 91,940.88 and 36,409.20

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Solution

The fourth proportional to 66,621.12, 91,940.88 and 36,409.20 is: 50,246.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,621.12 : 91,940.88 = 36,409.20 : x
  2. Step 2: Convert to fraction form
    66,621.12/91,940.88 = 36,409.20/x
  3. Step 3: Cross multiply
    66,621.12x = 91,940.88 × 36,409.20
  4. Step 4: Simplify right side
    66,621.12x = 3,347,493,888.10
  5. Step 5: Solve for x
    x = 3,347,493,888.10/66,621.12
  6. Step 6: Final answer
    x = 50,246.74

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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.