Home / 77,262.69-115,698-64,749.81

Finding the Fourth Proportional to 77,262.69, 115,698 and 64,749.81

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Solution

The fourth proportional to 77,262.69, 115,698 and 64,749.81 is: 96,960.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,262.69 : 115,698 = 64,749.81 : x
  2. Step 2: Convert to fraction form
    77,262.69/115,698 = 64,749.81/x
  3. Step 3: Cross multiply
    77,262.69x = 115,698 × 64,749.81
  4. Step 4: Simplify right side
    77,262.69x = 7,491,423,517.38
  5. Step 5: Solve for x
    x = 7,491,423,517.38/77,262.69
  6. Step 6: Final answer
    x = 96,960.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.