Home / 87,920.03-121,329.47-47,634.80

Finding the Fourth Proportional to 87,920.03, 121,329.47 and 47,634.80

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Solution

The fourth proportional to 87,920.03, 121,329.47 and 47,634.80 is: 65,735.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,920.03 : 121,329.47 = 47,634.80 : x
  2. Step 2: Convert to fraction form
    87,920.03/121,329.47 = 47,634.80/x
  3. Step 3: Cross multiply
    87,920.03x = 121,329.47 × 47,634.80
  4. Step 4: Simplify right side
    87,920.03x = 5,779,504,192.73
  5. Step 5: Solve for x
    x = 5,779,504,192.73/87,920.03
  6. Step 6: Final answer
    x = 65,735.93

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1.5x scale

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.