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Finding the Fourth Proportional to 57,154.66, 79,348.55 and 55,443.94

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Solution

The fourth proportional to 57,154.66, 79,348.55 and 55,443.94 is: 76,973.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,154.66 : 79,348.55 = 55,443.94 : x
  2. Step 2: Convert to fraction form
    57,154.66/79,348.55 = 55,443.94/x
  3. Step 3: Cross multiply
    57,154.66x = 79,348.55 × 55,443.94
  4. Step 4: Simplify right side
    57,154.66x = 4,399,396,245.29
  5. Step 5: Solve for x
    x = 4,399,396,245.29/57,154.66
  6. Step 6: Final answer
    x = 76,973.54

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.