Home / 79,321.28-118,945-29,399.36

Finding the Fourth Proportional to 79,321.28, 118,945 and 29,399.36

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Solution

The fourth proportional to 79,321.28, 118,945 and 29,399.36 is: 44,085.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,321.28 : 118,945 = 29,399.36 : x
  2. Step 2: Convert to fraction form
    79,321.28/118,945 = 29,399.36/x
  3. Step 3: Cross multiply
    79,321.28x = 118,945 × 29,399.36
  4. Step 4: Simplify right side
    79,321.28x = 3,496,906,875.20
  5. Step 5: Solve for x
    x = 3,496,906,875.20/79,321.28
  6. Step 6: Final answer
    x = 44,085.36

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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.