Home / 87,919.78-121,329.13-47,634.54

Finding the Fourth Proportional to 87,919.78, 121,329.13 and 47,634.54

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Solution

The fourth proportional to 87,919.78, 121,329.13 and 47,634.54 is: 65,735.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,919.78 : 121,329.13 = 47,634.54 : x
  2. Step 2: Convert to fraction form
    87,919.78/121,329.13 = 47,634.54/x
  3. Step 3: Cross multiply
    87,919.78x = 121,329.13 × 47,634.54
  4. Step 4: Simplify right side
    87,919.78x = 5,779,457,057.98
  5. Step 5: Solve for x
    x = 5,779,457,057.98/87,919.78
  6. Step 6: Final answer
    x = 65,735.58

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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.