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Finding the Fourth Proportional to 79,804.45, 119,706.68 and 51,810.85

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Solution

The fourth proportional to 79,804.45, 119,706.68 and 51,810.85 is: 77,716.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,804.45 : 119,706.68 = 51,810.85 : x
  2. Step 2: Convert to fraction form
    79,804.45/119,706.68 = 51,810.85/x
  3. Step 3: Cross multiply
    79,804.45x = 119,706.68 × 51,810.85
  4. Step 4: Simplify right side
    79,804.45x = 6,202,104,582.42
  5. Step 5: Solve for x
    x = 6,202,104,582.42/79,804.45
  6. Step 6: Final answer
    x = 77,716.28

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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.