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Finding the Fourth Proportional to 108,502.20, 162,801.90 and 49,307.40

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Solution

The fourth proportional to 108,502.20, 162,801.90 and 49,307.40 is: 73,983.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,502.20 : 162,801.90 = 49,307.40 : x
  2. Step 2: Convert to fraction form
    108,502.20/162,801.90 = 49,307.40/x
  3. Step 3: Cross multiply
    108,502.20x = 162,801.90 × 49,307.40
  4. Step 4: Simplify right side
    108,502.20x = 8,027,338,404.06
  5. Step 5: Solve for x
    x = 8,027,338,404.06/108,502.20
  6. Step 6: Final answer
    x = 73,983.19

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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.