Home / 77,738.92-107,287.86-45,910.78

Finding the Fourth Proportional to 77,738.92, 107,287.86 and 45,910.78

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Solution

The fourth proportional to 77,738.92, 107,287.86 and 45,910.78 is: 63,361.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,738.92 : 107,287.86 = 45,910.78 : x
  2. Step 2: Convert to fraction form
    77,738.92/107,287.86 = 45,910.78/x
  3. Step 3: Cross multiply
    77,738.92x = 107,287.86 × 45,910.78
  4. Step 4: Simplify right side
    77,738.92x = 4,925,669,337.13
  5. Step 5: Solve for x
    x = 4,925,669,337.13/77,738.92
  6. Step 6: Final answer
    x = 63,361.69

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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.