Home / 77,695.12-107,625.32-76,120.48

Finding the Fourth Proportional to 77,695.12, 107,625.32 and 76,120.48

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Solution

The fourth proportional to 77,695.12, 107,625.32 and 76,120.48 is: 105,444.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,695.12 : 107,625.32 = 76,120.48 : x
  2. Step 2: Convert to fraction form
    77,695.12/107,625.32 = 76,120.48/x
  3. Step 3: Cross multiply
    77,695.12x = 107,625.32 × 76,120.48
  4. Step 4: Simplify right side
    77,695.12x = 8,192,491,018.55
  5. Step 5: Solve for x
    x = 8,192,491,018.55/77,695.12
  6. Step 6: Final answer
    x = 105,444.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.