Home / 77,101.50-115,661.43-27,171.21

Finding the Fourth Proportional to 77,101.50, 115,661.43 and 27,171.21

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Solution

The fourth proportional to 77,101.50, 115,661.43 and 27,171.21 is: 40,760.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,101.50 : 115,661.43 = 27,171.21 : x
  2. Step 2: Convert to fraction form
    77,101.50/115,661.43 = 27,171.21/x
  3. Step 3: Cross multiply
    77,101.50x = 115,661.43 × 27,171.21
  4. Step 4: Simplify right side
    77,101.50x = 3,142,661,003.43
  5. Step 5: Solve for x
    x = 3,142,661,003.43/77,101.50
  6. Step 6: Final answer
    x = 40,760.05

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1.5x scale

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.