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Finding the Fourth Proportional to 58,540, 87,810 and 16,987.36

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Solution

The fourth proportional to 58,540, 87,810 and 16,987.36 is: 25,481.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,540 : 87,810 = 16,987.36 : x
  2. Step 2: Convert to fraction form
    58,540/87,810 = 16,987.36/x
  3. Step 3: Cross multiply
    58,540x = 87,810 × 16,987.36
  4. Step 4: Simplify right side
    58,540x = 1,491,660,081.60
  5. Step 5: Solve for x
    x = 1,491,660,081.60/58,540
  6. Step 6: Final answer
    x = 25,481.04

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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.