Home / 76,991.07-115,538.55-27,071.45

Finding the Fourth Proportional to 76,991.07, 115,538.55 and 27,071.45

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Solution

The fourth proportional to 76,991.07, 115,538.55 and 27,071.45 is: 40,625.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,991.07 : 115,538.55 = 27,071.45 : x
  2. Step 2: Convert to fraction form
    76,991.07/115,538.55 = 27,071.45/x
  3. Step 3: Cross multiply
    76,991.07x = 115,538.55 × 27,071.45
  4. Step 4: Simplify right side
    76,991.07x = 3,127,795,366.35
  5. Step 5: Solve for x
    x = 3,127,795,366.35/76,991.07
  6. Step 6: Final answer
    x = 40,625.43

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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.