Home / 85,309.05-127,963.56-45,811.83

Finding the Fourth Proportional to 85,309.05, 127,963.56 and 45,811.83

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Solution

The fourth proportional to 85,309.05, 127,963.56 and 45,811.83 is: 68,717.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,309.05 : 127,963.56 = 45,811.83 : x
  2. Step 2: Convert to fraction form
    85,309.05/127,963.56 = 45,811.83/x
  3. Step 3: Cross multiply
    85,309.05x = 127,963.56 × 45,811.83
  4. Step 4: Simplify right side
    85,309.05x = 5,862,244,856.91
  5. Step 5: Solve for x
    x = 5,862,244,856.91/85,309.05
  6. Step 6: Final answer
    x = 68,717.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.