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Finding the Fourth Proportional to 55,478.92, 83,318.61 and 51,028.57

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Solution

The fourth proportional to 55,478.92, 83,318.61 and 51,028.57 is: 76,635.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,478.92 : 83,318.61 = 51,028.57 : x
  2. Step 2: Convert to fraction form
    55,478.92/83,318.61 = 51,028.57/x
  3. Step 3: Cross multiply
    55,478.92x = 83,318.61 × 51,028.57
  4. Step 4: Simplify right side
    55,478.92x = 4,251,629,522.69
  5. Step 5: Solve for x
    x = 4,251,629,522.69/55,478.92
  6. Step 6: Final answer
    x = 76,635.04

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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.