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Finding the Fourth Proportional to 85,581.10, 118,105.14 and 47,855.26

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Solution

The fourth proportional to 85,581.10, 118,105.14 and 47,855.26 is: 66,042.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,581.10 : 118,105.14 = 47,855.26 : x
  2. Step 2: Convert to fraction form
    85,581.10/118,105.14 = 47,855.26/x
  3. Step 3: Cross multiply
    85,581.10x = 118,105.14 × 47,855.26
  4. Step 4: Simplify right side
    85,581.10x = 5,651,952,182.04
  5. Step 5: Solve for x
    x = 5,651,952,182.04/85,581.10
  6. Step 6: Final answer
    x = 66,042.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.