Home / 86,136.94-129,224.91-29,979.70

Finding the Fourth Proportional to 86,136.94, 129,224.91 and 29,979.70

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Solution

The fourth proportional to 86,136.94, 129,224.91 and 29,979.70 is: 44,976.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,136.94 : 129,224.91 = 29,979.70 : x
  2. Step 2: Convert to fraction form
    86,136.94/129,224.91 = 29,979.70/x
  3. Step 3: Cross multiply
    86,136.94x = 129,224.91 × 29,979.70
  4. Step 4: Simplify right side
    86,136.94x = 3,874,124,034.33
  5. Step 5: Solve for x
    x = 3,874,124,034.33/86,136.94
  6. Step 6: Final answer
    x = 44,976.34

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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.