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Finding the Fourth Proportional to 57,291.54, 85,926.18 and 28,820.90

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Solution

The fourth proportional to 57,291.54, 85,926.18 and 28,820.90 is: 43,225.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,291.54 : 85,926.18 = 28,820.90 : x
  2. Step 2: Convert to fraction form
    57,291.54/85,926.18 = 28,820.90/x
  3. Step 3: Cross multiply
    57,291.54x = 85,926.18 × 28,820.90
  4. Step 4: Simplify right side
    57,291.54x = 2,476,469,841.16
  5. Step 5: Solve for x
    x = 2,476,469,841.16/57,291.54
  6. Step 6: Final answer
    x = 43,225.75

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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.