Home / 77,739.92-107,289.24-45,911.78

Finding the Fourth Proportional to 77,739.92, 107,289.24 and 45,911.78

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Solution

The fourth proportional to 77,739.92, 107,289.24 and 45,911.78 is: 63,363.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,739.92 : 107,289.24 = 45,911.78 : x
  2. Step 2: Convert to fraction form
    77,739.92/107,289.24 = 45,911.78/x
  3. Step 3: Cross multiply
    77,739.92x = 107,289.24 × 45,911.78
  4. Step 4: Simplify right side
    77,739.92x = 4,925,839,983.25
  5. Step 5: Solve for x
    x = 4,925,839,983.25/77,739.92
  6. Step 6: Final answer
    x = 63,363.07

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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.