Home / 66,118.20-91,278.70-50,977.64

Finding the Fourth Proportional to 66,118.20, 91,278.70 and 50,977.64

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Solution

The fourth proportional to 66,118.20, 91,278.70 and 50,977.64 is: 70,376.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,118.20 : 91,278.70 = 50,977.64 : x
  2. Step 2: Convert to fraction form
    66,118.20/91,278.70 = 50,977.64/x
  3. Step 3: Cross multiply
    66,118.20x = 91,278.70 × 50,977.64
  4. Step 4: Simplify right side
    66,118.20x = 4,653,172,708.27
  5. Step 5: Solve for x
    x = 4,653,172,708.27/66,118.20
  6. Step 6: Final answer
    x = 70,376.58

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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.