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Finding the Fourth Proportional to 57,285.30, 85,855.05 and 27,639.30

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Solution

The fourth proportional to 57,285.30, 85,855.05 and 27,639.30 is: 41,423.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,285.30 : 85,855.05 = 27,639.30 : x
  2. Step 2: Convert to fraction form
    57,285.30/85,855.05 = 27,639.30/x
  3. Step 3: Cross multiply
    57,285.30x = 85,855.05 × 27,639.30
  4. Step 4: Simplify right side
    57,285.30x = 2,372,973,483.47
  5. Step 5: Solve for x
    x = 2,372,973,483.47/57,285.30
  6. Step 6: Final answer
    x = 41,423.78

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1.5x scale

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.