Home / 77,650.96-107,010.07-66,892.45

Finding the Fourth Proportional to 77,650.96, 107,010.07 and 66,892.45

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Solution

The fourth proportional to 77,650.96, 107,010.07 and 66,892.45 is: 92,183.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,650.96 : 107,010.07 = 66,892.45 : x
  2. Step 2: Convert to fraction form
    77,650.96/107,010.07 = 66,892.45/x
  3. Step 3: Cross multiply
    77,650.96x = 107,010.07 × 66,892.45
  4. Step 4: Simplify right side
    77,650.96x = 7,158,165,756.97
  5. Step 5: Solve for x
    x = 7,158,165,756.97/77,650.96
  6. Step 6: Final answer
    x = 92,183.87

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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.