Home / 76,634.62-115,017.54-43,387.36

Finding the Fourth Proportional to 76,634.62, 115,017.54 and 43,387.36

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Solution

The fourth proportional to 76,634.62, 115,017.54 and 43,387.36 is: 65,118.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,634.62 : 115,017.54 = 43,387.36 : x
  2. Step 2: Convert to fraction form
    76,634.62/115,017.54 = 43,387.36/x
  3. Step 3: Cross multiply
    76,634.62x = 115,017.54 × 43,387.36
  4. Step 4: Simplify right side
    76,634.62x = 4,990,307,414.29
  5. Step 5: Solve for x
    x = 4,990,307,414.29/76,634.62
  6. Step 6: Final answer
    x = 65,118.19

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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.