Home / 87,136.05-130,677.91-30,968.78

Finding the Fourth Proportional to 87,136.05, 130,677.91 and 30,968.78

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Solution

The fourth proportional to 87,136.05, 130,677.91 and 30,968.78 is: 46,443.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,136.05 : 130,677.91 = 30,968.78 : x
  2. Step 2: Convert to fraction form
    87,136.05/130,677.91 = 30,968.78/x
  3. Step 3: Cross multiply
    87,136.05x = 130,677.91 × 30,968.78
  4. Step 4: Simplify right side
    87,136.05x = 4,046,935,449.90
  5. Step 5: Solve for x
    x = 4,046,935,449.90/87,136.05
  6. Step 6: Final answer
    x = 46,443.87

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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.