Home / 77,136.42-115,722-27,220.08

Finding the Fourth Proportional to 77,136.42, 115,722 and 27,220.08

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Solution

The fourth proportional to 77,136.42, 115,722 and 27,220.08 is: 40,836.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,136.42 : 115,722 = 27,220.08 : x
  2. Step 2: Convert to fraction form
    77,136.42/115,722 = 27,220.08/x
  3. Step 3: Cross multiply
    77,136.42x = 115,722 × 27,220.08
  4. Step 4: Simplify right side
    77,136.42x = 3,149,962,097.76
  5. Step 5: Solve for x
    x = 3,149,962,097.76/77,136.42
  6. Step 6: Final answer
    x = 40,836.25

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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.