Home / 76,979.72-115,506.04-53,323.68

Finding the Fourth Proportional to 76,979.72, 115,506.04 and 53,323.68

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Solution

The fourth proportional to 76,979.72, 115,506.04 and 53,323.68 is: 80,010.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,979.72 : 115,506.04 = 53,323.68 : x
  2. Step 2: Convert to fraction form
    76,979.72/115,506.04 = 53,323.68/x
  3. Step 3: Cross multiply
    76,979.72x = 115,506.04 × 53,323.68
  4. Step 4: Simplify right side
    76,979.72x = 6,159,207,115.03
  5. Step 5: Solve for x
    x = 6,159,207,115.03/76,979.72
  6. Step 6: Final answer
    x = 80,010.78

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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.