Home / 85,530.84-128,288.05-26,350.62

Finding the Fourth Proportional to 85,530.84, 128,288.05 and 26,350.62

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Solution

The fourth proportional to 85,530.84, 128,288.05 and 26,350.62 is: 39,523.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,530.84 : 128,288.05 = 26,350.62 : x
  2. Step 2: Convert to fraction form
    85,530.84/128,288.05 = 26,350.62/x
  3. Step 3: Cross multiply
    85,530.84x = 128,288.05 × 26,350.62
  4. Step 4: Simplify right side
    85,530.84x = 3,380,469,257.36
  5. Step 5: Solve for x
    x = 3,380,469,257.36/85,530.84
  6. Step 6: Final answer
    x = 39,523.40

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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.