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Finding the Fourth Proportional to 79,091.71, 118,628.79 and 19,927.37

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Solution

The fourth proportional to 79,091.71, 118,628.79 and 19,927.37 is: 29,888.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,091.71 : 118,628.79 = 19,927.37 : x
  2. Step 2: Convert to fraction form
    79,091.71/118,628.79 = 19,927.37/x
  3. Step 3: Cross multiply
    79,091.71x = 118,628.79 × 19,927.37
  4. Step 4: Simplify right side
    79,091.71x = 2,363,960,012.83
  5. Step 5: Solve for x
    x = 2,363,960,012.83/79,091.71
  6. Step 6: Final answer
    x = 29,888.85

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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.