Home / 57,105.45-78,803.52-31,612.92

Finding the Fourth Proportional to 57,105.45, 78,803.52 and 31,612.92

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Solution

The fourth proportional to 57,105.45, 78,803.52 and 31,612.92 is: 43,624.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,105.45 : 78,803.52 = 31,612.92 : x
  2. Step 2: Convert to fraction form
    57,105.45/78,803.52 = 31,612.92/x
  3. Step 3: Cross multiply
    57,105.45x = 78,803.52 × 31,612.92
  4. Step 4: Simplify right side
    57,105.45x = 2,491,209,373.48
  5. Step 5: Solve for x
    x = 2,491,209,373.48/57,105.45
  6. Step 6: Final answer
    x = 43,624.72

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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.