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Finding the Fourth Proportional to 87,158.73, 130,623.21 and 34,539.51

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Solution

The fourth proportional to 87,158.73, 130,623.21 and 34,539.51 is: 51,763.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,158.73 : 130,623.21 = 34,539.51 : x
  2. Step 2: Convert to fraction form
    87,158.73/130,623.21 = 34,539.51/x
  3. Step 3: Cross multiply
    87,158.73x = 130,623.21 × 34,539.51
  4. Step 4: Simplify right side
    87,158.73x = 4,511,661,668.03
  5. Step 5: Solve for x
    x = 4,511,661,668.03/87,158.73
  6. Step 6: Final answer
    x = 51,763.74

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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.