Home / 52,091.42-78,136.99-12,648.54

Finding the Fourth Proportional to 52,091.42, 78,136.99 and 12,648.54

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Solution

The fourth proportional to 52,091.42, 78,136.99 and 12,648.54 is: 18,972.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,091.42 : 78,136.99 = 12,648.54 : x
  2. Step 2: Convert to fraction form
    52,091.42/78,136.99 = 12,648.54/x
  3. Step 3: Cross multiply
    52,091.42x = 78,136.99 × 12,648.54
  4. Step 4: Simplify right side
    52,091.42x = 988,318,723.43
  5. Step 5: Solve for x
    x = 988,318,723.43/52,091.42
  6. Step 6: Final answer
    x = 18,972.77

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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.