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Finding the Fourth Proportional to 79,696.91, 119,545.17 and 54,661.03

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Solution

The fourth proportional to 79,696.91, 119,545.17 and 54,661.03 is: 81,991.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,696.91 : 119,545.17 = 54,661.03 : x
  2. Step 2: Convert to fraction form
    79,696.91/119,545.17 = 54,661.03/x
  3. Step 3: Cross multiply
    79,696.91x = 119,545.17 × 54,661.03
  4. Step 4: Simplify right side
    79,696.91x = 6,534,461,619.88
  5. Step 5: Solve for x
    x = 6,534,461,619.88/79,696.91
  6. Step 6: Final answer
    x = 81,991.40

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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.