Home / 115,047.58-172,621.64-40,221.45

Finding the Fourth Proportional to 115,047.58, 172,621.64 and 40,221.45

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Solution

The fourth proportional to 115,047.58, 172,621.64 and 40,221.45 is: 60,349.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,047.58 : 172,621.64 = 40,221.45 : x
  2. Step 2: Convert to fraction form
    115,047.58/172,621.64 = 40,221.45/x
  3. Step 3: Cross multiply
    115,047.58x = 172,621.64 × 40,221.45
  4. Step 4: Simplify right side
    115,047.58x = 6,943,092,662.18
  5. Step 5: Solve for x
    x = 6,943,092,662.18/115,047.58
  6. Step 6: Final answer
    x = 60,349.75

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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.