Home / 87,287.76-120,428.37-50,980.86

Finding the Fourth Proportional to 87,287.76, 120,428.37 and 50,980.86

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Solution

The fourth proportional to 87,287.76, 120,428.37 and 50,980.86 is: 70,336.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,287.76 : 120,428.37 = 50,980.86 : x
  2. Step 2: Convert to fraction form
    87,287.76/120,428.37 = 50,980.86/x
  3. Step 3: Cross multiply
    87,287.76x = 120,428.37 × 50,980.86
  4. Step 4: Simplify right side
    87,287.76x = 6,139,541,871.00
  5. Step 5: Solve for x
    x = 6,139,541,871.00/87,287.76
  6. Step 6: Final answer
    x = 70,336.80

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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.