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Finding the Fourth Proportional to 85,149.53, 127,592.90 and 53,919.17

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Solution

The fourth proportional to 85,149.53, 127,592.90 and 53,919.17 is: 80,795.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,149.53 : 127,592.90 = 53,919.17 : x
  2. Step 2: Convert to fraction form
    85,149.53/127,592.90 = 53,919.17/x
  3. Step 3: Cross multiply
    85,149.53x = 127,592.90 × 53,919.17
  4. Step 4: Simplify right side
    85,149.53x = 6,879,702,996.30
  5. Step 5: Solve for x
    x = 6,879,702,996.30/85,149.53
  6. Step 6: Final answer
    x = 80,795.55

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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.