Home / 87,709.76-120,897.24-68,555.72

Finding the Fourth Proportional to 87,709.76, 120,897.24 and 68,555.72

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Solution

The fourth proportional to 87,709.76, 120,897.24 and 68,555.72 is: 94,495.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,709.76 : 120,897.24 = 68,555.72 : x
  2. Step 2: Convert to fraction form
    87,709.76/120,897.24 = 68,555.72/x
  3. Step 3: Cross multiply
    87,709.76x = 120,897.24 × 68,555.72
  4. Step 4: Simplify right side
    87,709.76x = 8,288,197,334.21
  5. Step 5: Solve for x
    x = 8,288,197,334.21/87,709.76
  6. Step 6: Final answer
    x = 94,495.72

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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.