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Finding the Fourth Proportional to 51,396.78, 77,108.10 and 14,460.78

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Solution

The fourth proportional to 51,396.78, 77,108.10 and 14,460.78 is: 21,694.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,396.78 : 77,108.10 = 14,460.78 : x
  2. Step 2: Convert to fraction form
    51,396.78/77,108.10 = 14,460.78/x
  3. Step 3: Cross multiply
    51,396.78x = 77,108.10 × 14,460.78
  4. Step 4: Simplify right side
    51,396.78x = 1,115,043,270.32
  5. Step 5: Solve for x
    x = 1,115,043,270.32/51,396.78
  6. Step 6: Final answer
    x = 21,694.81

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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.