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Finding the Fourth Proportional to 74,671, 112,003.60 and 18,511.24

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Solution

The fourth proportional to 74,671, 112,003.60 and 18,511.24 is: 27,766.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,671 : 112,003.60 = 18,511.24 : x
  2. Step 2: Convert to fraction form
    74,671/112,003.60 = 18,511.24/x
  3. Step 3: Cross multiply
    74,671x = 112,003.60 × 18,511.24
  4. Step 4: Simplify right side
    74,671x = 2,073,325,520.46
  5. Step 5: Solve for x
    x = 2,073,325,520.46/74,671
  6. Step 6: Final answer
    x = 27,766.14

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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.