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Finding the Fourth Proportional to 74,994.96, 112,455.54 and 30,609.80

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Solution

The fourth proportional to 74,994.96, 112,455.54 and 30,609.80 is: 45,899.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,994.96 : 112,455.54 = 30,609.80 : x
  2. Step 2: Convert to fraction form
    74,994.96/112,455.54 = 30,609.80/x
  3. Step 3: Cross multiply
    74,994.96x = 112,455.54 × 30,609.80
  4. Step 4: Simplify right side
    74,994.96x = 3,442,241,447.72
  5. Step 5: Solve for x
    x = 3,442,241,447.72/74,994.96
  6. Step 6: Final answer
    x = 45,899.63

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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.