Home / 76,688.22-115,098.77-76,510.90

Finding the Fourth Proportional to 76,688.22, 115,098.77 and 76,510.90

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Solution

The fourth proportional to 76,688.22, 115,098.77 and 76,510.90 is: 114,832.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,688.22 : 115,098.77 = 76,510.90 : x
  2. Step 2: Convert to fraction form
    76,688.22/115,098.77 = 76,510.90/x
  3. Step 3: Cross multiply
    76,688.22x = 115,098.77 × 76,510.90
  4. Step 4: Simplify right side
    76,688.22x = 8,806,310,481.59
  5. Step 5: Solve for x
    x = 8,806,310,481.59/76,688.22
  6. Step 6: Final answer
    x = 114,832.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.