Home / 87,739.56-121,070.34-49,499.71

Finding the Fourth Proportional to 87,739.56, 121,070.34 and 49,499.71

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Solution

The fourth proportional to 87,739.56, 121,070.34 and 49,499.71 is: 68,303.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,739.56 : 121,070.34 = 49,499.71 : x
  2. Step 2: Convert to fraction form
    87,739.56/121,070.34 = 49,499.71/x
  3. Step 3: Cross multiply
    87,739.56x = 121,070.34 × 49,499.71
  4. Step 4: Simplify right side
    87,739.56x = 5,992,946,416.93
  5. Step 5: Solve for x
    x = 5,992,946,416.93/87,739.56
  6. Step 6: Final answer
    x = 68,303.81

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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.