Home / 87,919.90-121,329.30-47,634.69

Finding the Fourth Proportional to 87,919.90, 121,329.30 and 47,634.69

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Solution

The fourth proportional to 87,919.90, 121,329.30 and 47,634.69 is: 65,735.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,919.90 : 121,329.30 = 47,634.69 : x
  2. Step 2: Convert to fraction form
    87,919.90/121,329.30 = 47,634.69/x
  3. Step 3: Cross multiply
    87,919.90x = 121,329.30 × 47,634.69
  4. Step 4: Simplify right side
    87,919.90x = 5,779,483,593.42
  5. Step 5: Solve for x
    x = 5,779,483,593.42/87,919.90
  6. Step 6: Final answer
    x = 65,735.78

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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.