Home / 77,764.40-107,313.66-43,772.81

Finding the Fourth Proportional to 77,764.40, 107,313.66 and 43,772.81

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Solution

The fourth proportional to 77,764.40, 107,313.66 and 43,772.81 is: 60,405.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,764.40 : 107,313.66 = 43,772.81 : x
  2. Step 2: Convert to fraction form
    77,764.40/107,313.66 = 43,772.81/x
  3. Step 3: Cross multiply
    77,764.40x = 107,313.66 × 43,772.81
  4. Step 4: Simplify right side
    77,764.40x = 4,697,419,913.02
  5. Step 5: Solve for x
    x = 4,697,419,913.02/77,764.40
  6. Step 6: Final answer
    x = 60,405.79

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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.