Home / 70,388.49-97,137.68-40,173.20

Finding the Fourth Proportional to 70,388.49, 97,137.68 and 40,173.20

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Solution

The fourth proportional to 70,388.49, 97,137.68 and 40,173.20 is: 55,439.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,388.49 : 97,137.68 = 40,173.20 : x
  2. Step 2: Convert to fraction form
    70,388.49/97,137.68 = 40,173.20/x
  3. Step 3: Cross multiply
    70,388.49x = 97,137.68 × 40,173.20
  4. Step 4: Simplify right side
    70,388.49x = 3,902,331,245.31
  5. Step 5: Solve for x
    x = 3,902,331,245.31/70,388.49
  6. Step 6: Final answer
    x = 55,439.91

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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.