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Finding the Fourth Proportional to 70,399.82, 97,154.44 and 40,190.06

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Solution

The fourth proportional to 70,399.82, 97,154.44 and 40,190.06 is: 55,463.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,399.82 : 97,154.44 = 40,190.06 : x
  2. Step 2: Convert to fraction form
    70,399.82/97,154.44 = 40,190.06/x
  3. Step 3: Cross multiply
    70,399.82x = 97,154.44 × 40,190.06
  4. Step 4: Simplify right side
    70,399.82x = 3,904,642,772.87
  5. Step 5: Solve for x
    x = 3,904,642,772.87/70,399.82
  6. Step 6: Final answer
    x = 55,463.82

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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.