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Finding the Fourth Proportional to 74,909.74, 112,381.37 and 28,163.02

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Solution

The fourth proportional to 74,909.74, 112,381.37 and 28,163.02 is: 42,250.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,909.74 : 112,381.37 = 28,163.02 : x
  2. Step 2: Convert to fraction form
    74,909.74/112,381.37 = 28,163.02/x
  3. Step 3: Cross multiply
    74,909.74x = 112,381.37 × 28,163.02
  4. Step 4: Simplify right side
    74,909.74x = 3,164,998,770.94
  5. Step 5: Solve for x
    x = 3,164,998,770.94/74,909.74
  6. Step 6: Final answer
    x = 42,250.83

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.