Home / 79,173.16-109,231.87-45,157.20

Finding the Fourth Proportional to 79,173.16, 109,231.87 and 45,157.20

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Solution

The fourth proportional to 79,173.16, 109,231.87 and 45,157.20 is: 62,301.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,173.16 : 109,231.87 = 45,157.20 : x
  2. Step 2: Convert to fraction form
    79,173.16/109,231.87 = 45,157.20/x
  3. Step 3: Cross multiply
    79,173.16x = 109,231.87 × 45,157.20
  4. Step 4: Simplify right side
    79,173.16x = 4,932,605,399.96
  5. Step 5: Solve for x
    x = 4,932,605,399.96/79,173.16
  6. Step 6: Final answer
    x = 62,301.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.