Home / 57,621.40-86,432.10-54,122.20

Finding the Fourth Proportional to 57,621.40, 86,432.10 and 54,122.20

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Solution

The fourth proportional to 57,621.40, 86,432.10 and 54,122.20 is: 81,183.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,621.40 : 86,432.10 = 54,122.20 : x
  2. Step 2: Convert to fraction form
    57,621.40/86,432.10 = 54,122.20/x
  3. Step 3: Cross multiply
    57,621.40x = 86,432.10 × 54,122.20
  4. Step 4: Simplify right side
    57,621.40x = 4,677,895,402.62
  5. Step 5: Solve for x
    x = 4,677,895,402.62/57,621.40
  6. Step 6: Final answer
    x = 81,183.30

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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.