Home / 115,048.72-172,614.60-40,179.88

Finding the Fourth Proportional to 115,048.72, 172,614.60 and 40,179.88

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Solution

The fourth proportional to 115,048.72, 172,614.60 and 40,179.88 is: 60,284.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,048.72 : 172,614.60 = 40,179.88 : x
  2. Step 2: Convert to fraction form
    115,048.72/172,614.60 = 40,179.88/x
  3. Step 3: Cross multiply
    115,048.72x = 172,614.60 × 40,179.88
  4. Step 4: Simplify right side
    115,048.72x = 6,935,633,914.25
  5. Step 5: Solve for x
    x = 6,935,633,914.25/115,048.72
  6. Step 6: Final answer
    x = 60,284.32

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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.