Home / 87,784.68-121,142.35-49,556.60

Finding the Fourth Proportional to 87,784.68, 121,142.35 and 49,556.60

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Solution

The fourth proportional to 87,784.68, 121,142.35 and 49,556.60 is: 68,387.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,784.68 : 121,142.35 = 49,556.60 : x
  2. Step 2: Convert to fraction form
    87,784.68/121,142.35 = 49,556.60/x
  3. Step 3: Cross multiply
    87,784.68x = 121,142.35 × 49,556.60
  4. Step 4: Simplify right side
    87,784.68x = 6,003,402,982.01
  5. Step 5: Solve for x
    x = 6,003,402,982.01/87,784.68
  6. Step 6: Final answer
    x = 68,387.82

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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.