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Finding the Fourth Proportional to 85,900.92, 118,519.02 and 55,687.56

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Solution

The fourth proportional to 85,900.92, 118,519.02 and 55,687.56 is: 76,833.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,900.92 : 118,519.02 = 55,687.56 : x
  2. Step 2: Convert to fraction form
    85,900.92/118,519.02 = 55,687.56/x
  3. Step 3: Cross multiply
    85,900.92x = 118,519.02 × 55,687.56
  4. Step 4: Simplify right side
    85,900.92x = 6,600,035,037.39
  5. Step 5: Solve for x
    x = 6,600,035,037.39/85,900.92
  6. Step 6: Final answer
    x = 76,833.11

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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.