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Finding the Fourth Proportional to 51,490.20, 77,148.90 and 25,138.20

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Solution

The fourth proportional to 51,490.20, 77,148.90 and 25,138.20 is: 37,665.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,490.20 : 77,148.90 = 25,138.20 : x
  2. Step 2: Convert to fraction form
    51,490.20/77,148.90 = 25,138.20/x
  3. Step 3: Cross multiply
    51,490.20x = 77,148.90 × 25,138.20
  4. Step 4: Simplify right side
    51,490.20x = 1,939,384,477.98
  5. Step 5: Solve for x
    x = 1,939,384,477.98/51,490.20
  6. Step 6: Final answer
    x = 37,665.12

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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.