Home / 79,117.57-109,179.53-45,137.06

Finding the Fourth Proportional to 79,117.57, 109,179.53 and 45,137.06

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Solution

The fourth proportional to 79,117.57, 109,179.53 and 45,137.06 is: 62,287.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,117.57 : 109,179.53 = 45,137.06 : x
  2. Step 2: Convert to fraction form
    79,117.57/109,179.53 = 45,137.06/x
  3. Step 3: Cross multiply
    79,117.57x = 109,179.53 × 45,137.06
  4. Step 4: Simplify right side
    79,117.57x = 4,928,042,496.42
  5. Step 5: Solve for x
    x = 4,928,042,496.42/79,117.57
  6. Step 6: Final answer
    x = 62,287.59

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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.