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Finding the Fourth Proportional to 42,704.80, 63,884.40 and 37,520.80

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Solution

The fourth proportional to 42,704.80, 63,884.40 and 37,520.80 is: 56,129.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,704.80 : 63,884.40 = 37,520.80 : x
  2. Step 2: Convert to fraction form
    42,704.80/63,884.40 = 37,520.80/x
  3. Step 3: Cross multiply
    42,704.80x = 63,884.40 × 37,520.80
  4. Step 4: Simplify right side
    42,704.80x = 2,396,993,795.52
  5. Step 5: Solve for x
    x = 2,396,993,795.52/42,704.80
  6. Step 6: Final answer
    x = 56,129.38

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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.