Home / 66,118.16-91,278.60-50,977.76

Finding the Fourth Proportional to 66,118.16, 91,278.60 and 50,977.76

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Solution

The fourth proportional to 66,118.16, 91,278.60 and 50,977.76 is: 70,376.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,118.16 : 91,278.60 = 50,977.76 : x
  2. Step 2: Convert to fraction form
    66,118.16/91,278.60 = 50,977.76/x
  3. Step 3: Cross multiply
    66,118.16x = 91,278.60 × 50,977.76
  4. Step 4: Simplify right side
    66,118.16x = 4,653,178,563.94
  5. Step 5: Solve for x
    x = 4,653,178,563.94/66,118.16
  6. Step 6: Final answer
    x = 70,376.71

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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.