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Finding the Fourth Proportional to 57,004.40, 85,409.40 and 48,645.20

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Solution

The fourth proportional to 57,004.40, 85,409.40 and 48,645.20 is: 72,884.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,004.40 : 85,409.40 = 48,645.20 : x
  2. Step 2: Convert to fraction form
    57,004.40/85,409.40 = 48,645.20/x
  3. Step 3: Cross multiply
    57,004.40x = 85,409.40 × 48,645.20
  4. Step 4: Simplify right side
    57,004.40x = 4,154,757,344.88
  5. Step 5: Solve for x
    x = 4,154,757,344.88/57,004.40
  6. Step 6: Final answer
    x = 72,884.85

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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.