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Finding the Fourth Proportional to 57,143.59, 85,715.40 and 27,555.91

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Solution

The fourth proportional to 57,143.59, 85,715.40 and 27,555.91 is: 41,333.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,143.59 : 85,715.40 = 27,555.91 : x
  2. Step 2: Convert to fraction form
    57,143.59/85,715.40 = 27,555.91/x
  3. Step 3: Cross multiply
    57,143.59x = 85,715.40 × 27,555.91
  4. Step 4: Simplify right side
    57,143.59x = 2,361,965,848.01
  5. Step 5: Solve for x
    x = 2,361,965,848.01/57,143.59
  6. Step 6: Final answer
    x = 41,333.87

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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.