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Finding the Fourth Proportional to 45,168.67, 67,740.21 and 28,503.73

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Solution

The fourth proportional to 45,168.67, 67,740.21 and 28,503.73 is: 42,747.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,168.67 : 67,740.21 = 28,503.73 : x
  2. Step 2: Convert to fraction form
    45,168.67/67,740.21 = 28,503.73/x
  3. Step 3: Cross multiply
    45,168.67x = 67,740.21 × 28,503.73
  4. Step 4: Simplify right side
    45,168.67x = 1,930,848,655.98
  5. Step 5: Solve for x
    x = 1,930,848,655.98/45,168.67
  6. Step 6: Final answer
    x = 42,747.52

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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.