Home / 77,911.47-116,782.97-31,112.91

Finding the Fourth Proportional to 77,911.47, 116,782.97 and 31,112.91

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Solution

The fourth proportional to 77,911.47, 116,782.97 and 31,112.91 is: 46,635.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,911.47 : 116,782.97 = 31,112.91 : x
  2. Step 2: Convert to fraction form
    77,911.47/116,782.97 = 31,112.91/x
  3. Step 3: Cross multiply
    77,911.47x = 116,782.97 × 31,112.91
  4. Step 4: Simplify right side
    77,911.47x = 3,633,457,879.58
  5. Step 5: Solve for x
    x = 3,633,457,879.58/77,911.47
  6. Step 6: Final answer
    x = 46,635.72

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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.