Home / 79,129.79-109,196.37-45,149.27

Finding the Fourth Proportional to 79,129.79, 109,196.37 and 45,149.27

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Solution

The fourth proportional to 79,129.79, 109,196.37 and 45,149.27 is: 62,304.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,129.79 : 109,196.37 = 45,149.27 : x
  2. Step 2: Convert to fraction form
    79,129.79/109,196.37 = 45,149.27/x
  3. Step 3: Cross multiply
    79,129.79x = 109,196.37 × 45,149.27
  4. Step 4: Simplify right side
    79,129.79x = 4,930,136,392.15
  5. Step 5: Solve for x
    x = 4,930,136,392.15/79,129.79
  6. Step 6: Final answer
    x = 62,304.43

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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.