Home / 52,331.62-78,475.56-21,145

Finding the Fourth Proportional to 52,331.62, 78,475.56 and 21,145

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Solution

The fourth proportional to 52,331.62, 78,475.56 and 21,145 is: 31,708.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,331.62 : 78,475.56 = 21,145 : x
  2. Step 2: Convert to fraction form
    52,331.62/78,475.56 = 21,145/x
  3. Step 3: Cross multiply
    52,331.62x = 78,475.56 × 21,145
  4. Step 4: Simplify right side
    52,331.62x = 1,659,365,716.20
  5. Step 5: Solve for x
    x = 1,659,365,716.20/52,331.62
  6. Step 6: Final answer
    x = 31,708.66

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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.