Home / 79,087.75-109,136.52-43,278.46

Finding the Fourth Proportional to 79,087.75, 109,136.52 and 43,278.46

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Solution

The fourth proportional to 79,087.75, 109,136.52 and 43,278.46 is: 59,721.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,087.75 : 109,136.52 = 43,278.46 : x
  2. Step 2: Convert to fraction form
    79,087.75/109,136.52 = 43,278.46/x
  3. Step 3: Cross multiply
    79,087.75x = 109,136.52 × 43,278.46
  4. Step 4: Simplify right side
    79,087.75x = 4,723,260,515.36
  5. Step 5: Solve for x
    x = 4,723,260,515.36/79,087.75
  6. Step 6: Final answer
    x = 59,721.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.