Home / 76,982.28-106,234.50-42,991.32

Finding the Fourth Proportional to 76,982.28, 106,234.50 and 42,991.32

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Solution

The fourth proportional to 76,982.28, 106,234.50 and 42,991.32 is: 59,327.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,982.28 : 106,234.50 = 42,991.32 : x
  2. Step 2: Convert to fraction form
    76,982.28/106,234.50 = 42,991.32/x
  3. Step 3: Cross multiply
    76,982.28x = 106,234.50 × 42,991.32
  4. Step 4: Simplify right side
    76,982.28x = 4,567,161,384.54
  5. Step 5: Solve for x
    x = 4,567,161,384.54/76,982.28
  6. Step 6: Final answer
    x = 59,327.44

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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.