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Finding the Fourth Proportional to 79,854.12, 119,781.72 and 35,469

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Solution

The fourth proportional to 79,854.12, 119,781.72 and 35,469 is: 53,203.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,854.12 : 119,781.72 = 35,469 : x
  2. Step 2: Convert to fraction form
    79,854.12/119,781.72 = 35,469/x
  3. Step 3: Cross multiply
    79,854.12x = 119,781.72 × 35,469
  4. Step 4: Simplify right side
    79,854.12x = 4,248,537,826.68
  5. Step 5: Solve for x
    x = 4,248,537,826.68/79,854.12
  6. Step 6: Final answer
    x = 53,203.74

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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.