Home / 85,424.24-128,136.60-50,315.60

Finding the Fourth Proportional to 85,424.24, 128,136.60 and 50,315.60

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Solution

The fourth proportional to 85,424.24, 128,136.60 and 50,315.60 is: 75,473.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,424.24 : 128,136.60 = 50,315.60 : x
  2. Step 2: Convert to fraction form
    85,424.24/128,136.60 = 50,315.60/x
  3. Step 3: Cross multiply
    85,424.24x = 128,136.60 × 50,315.60
  4. Step 4: Simplify right side
    85,424.24x = 6,447,269,910.96
  5. Step 5: Solve for x
    x = 6,447,269,910.96/85,424.24
  6. Step 6: Final answer
    x = 75,473.54

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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.