Home / 84,545.20-116,406.82-71,771.91

Finding the Fourth Proportional to 84,545.20, 116,406.82 and 71,771.91

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Solution

The fourth proportional to 84,545.20, 116,406.82 and 71,771.91 is: 98,819.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,545.20 : 116,406.82 = 71,771.91 : x
  2. Step 2: Convert to fraction form
    84,545.20/116,406.82 = 71,771.91/x
  3. Step 3: Cross multiply
    84,545.20x = 116,406.82 × 71,771.91
  4. Step 4: Simplify right side
    84,545.20x = 8,354,739,461.62
  5. Step 5: Solve for x
    x = 8,354,739,461.62/84,545.20
  6. Step 6: Final answer
    x = 98,819.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.