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Finding the Fourth Proportional to 54,272.60, 81,408.90 and 38,526.20

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Solution

The fourth proportional to 54,272.60, 81,408.90 and 38,526.20 is: 57,789.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,272.60 : 81,408.90 = 38,526.20 : x
  2. Step 2: Convert to fraction form
    54,272.60/81,408.90 = 38,526.20/x
  3. Step 3: Cross multiply
    54,272.60x = 81,408.90 × 38,526.20
  4. Step 4: Simplify right side
    54,272.60x = 3,136,375,563.18
  5. Step 5: Solve for x
    x = 3,136,375,563.18/54,272.60
  6. Step 6: Final answer
    x = 57,789.30

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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.