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Finding the Fourth Proportional to 108,982.80, 163,409.40 and 56,494.80

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Solution

The fourth proportional to 108,982.80, 163,409.40 and 56,494.80 is: 84,708.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,982.80 : 163,409.40 = 56,494.80 : x
  2. Step 2: Convert to fraction form
    108,982.80/163,409.40 = 56,494.80/x
  3. Step 3: Cross multiply
    108,982.80x = 163,409.40 × 56,494.80
  4. Step 4: Simplify right side
    108,982.80x = 9,231,781,371.12
  5. Step 5: Solve for x
    x = 9,231,781,371.12/108,982.80
  6. Step 6: Final answer
    x = 84,708.61

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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.