Home / 77,932.20-116,881.33-21,004.77

Finding the Fourth Proportional to 77,932.20, 116,881.33 and 21,004.77

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Solution

The fourth proportional to 77,932.20, 116,881.33 and 21,004.77 is: 31,502.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,932.20 : 116,881.33 = 21,004.77 : x
  2. Step 2: Convert to fraction form
    77,932.20/116,881.33 = 21,004.77/x
  3. Step 3: Cross multiply
    77,932.20x = 116,881.33 × 21,004.77
  4. Step 4: Simplify right side
    77,932.20x = 2,455,065,453.94
  5. Step 5: Solve for x
    x = 2,455,065,453.94/77,932.20
  6. Step 6: Final answer
    x = 31,502.58

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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.