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Finding the Fourth Proportional to 108,418.80, 162,628.02 and 55,843.32

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Solution

The fourth proportional to 108,418.80, 162,628.02 and 55,843.32 is: 83,764.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,418.80 : 162,628.02 = 55,843.32 : x
  2. Step 2: Convert to fraction form
    108,418.80/162,628.02 = 55,843.32/x
  3. Step 3: Cross multiply
    108,418.80x = 162,628.02 × 55,843.32
  4. Step 4: Simplify right side
    108,418.80x = 9,081,688,561.83
  5. Step 5: Solve for x
    x = 9,081,688,561.83/108,418.80
  6. Step 6: Final answer
    x = 83,764.89

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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.