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Finding the Fourth Proportional to 79,858.71, 119,815.74 and 35,516.61

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Solution

The fourth proportional to 79,858.71, 119,815.74 and 35,516.61 is: 53,287.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,858.71 : 119,815.74 = 35,516.61 : x
  2. Step 2: Convert to fraction form
    79,858.71/119,815.74 = 35,516.61/x
  3. Step 3: Cross multiply
    79,858.71x = 119,815.74 × 35,516.61
  4. Step 4: Simplify right side
    79,858.71x = 4,255,448,909.44
  5. Step 5: Solve for x
    x = 4,255,448,909.44/79,858.71
  6. Step 6: Final answer
    x = 53,287.22

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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.