Home / 85,690.20-128,572.08-33,136.56

Finding the Fourth Proportional to 85,690.20, 128,572.08 and 33,136.56

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Solution

The fourth proportional to 85,690.20, 128,572.08 and 33,136.56 is: 49,719.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,690.20 : 128,572.08 = 33,136.56 : x
  2. Step 2: Convert to fraction form
    85,690.20/128,572.08 = 33,136.56/x
  3. Step 3: Cross multiply
    85,690.20x = 128,572.08 × 33,136.56
  4. Step 4: Simplify right side
    85,690.20x = 4,260,436,443.24
  5. Step 5: Solve for x
    x = 4,260,436,443.24/85,690.20
  6. Step 6: Final answer
    x = 49,719.06

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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.