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Finding the Fourth Proportional to 87,051.54, 119,348.76 and 85,476.90

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Solution

The fourth proportional to 87,051.54, 119,348.76 and 85,476.90 is: 117,189.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,051.54 : 119,348.76 = 85,476.90 : x
  2. Step 2: Convert to fraction form
    87,051.54/119,348.76 = 85,476.90/x
  3. Step 3: Cross multiply
    87,051.54x = 119,348.76 × 85,476.90
  4. Step 4: Simplify right side
    87,051.54x = 10,201,562,023.64
  5. Step 5: Solve for x
    x = 10,201,562,023.64/87,051.54
  6. Step 6: Final answer
    x = 117,189.91

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.