Home / 51,438.45-77,138.10-18,152.31

Finding the Fourth Proportional to 51,438.45, 77,138.10 and 18,152.31

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Solution

The fourth proportional to 51,438.45, 77,138.10 and 18,152.31 is: 27,221.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,438.45 : 77,138.10 = 18,152.31 : x
  2. Step 2: Convert to fraction form
    51,438.45/77,138.10 = 18,152.31/x
  3. Step 3: Cross multiply
    51,438.45x = 77,138.10 × 18,152.31
  4. Step 4: Simplify right side
    51,438.45x = 1,400,234,704.01
  5. Step 5: Solve for x
    x = 1,400,234,704.01/51,438.45
  6. Step 6: Final answer
    x = 27,221.56

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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.