Home / 87,810-121,177.77-47,523.75

Finding the Fourth Proportional to 87,810, 121,177.77 and 47,523.75

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Solution

The fourth proportional to 87,810, 121,177.77 and 47,523.75 is: 65,582.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,810 : 121,177.77 = 47,523.75 : x
  2. Step 2: Convert to fraction form
    87,810/121,177.77 = 47,523.75/x
  3. Step 3: Cross multiply
    87,810x = 121,177.77 × 47,523.75
  4. Step 4: Simplify right side
    87,810x = 5,758,822,047.04
  5. Step 5: Solve for x
    x = 5,758,822,047.04/87,810
  6. Step 6: Final answer
    x = 65,582.76

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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.