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Finding the Fourth Proportional to 76,997.52, 106,009.56 and 67,057.20

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Solution

The fourth proportional to 76,997.52, 106,009.56 and 67,057.20 is: 92,323.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,997.52 : 106,009.56 = 67,057.20 : x
  2. Step 2: Convert to fraction form
    76,997.52/106,009.56 = 67,057.20/x
  3. Step 3: Cross multiply
    76,997.52x = 106,009.56 × 67,057.20
  4. Step 4: Simplify right side
    76,997.52x = 7,108,704,266.83
  5. Step 5: Solve for x
    x = 7,108,704,266.83/76,997.52
  6. Step 6: Final answer
    x = 92,323.81

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1.5x scale

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.