Home / 51,274.45-76,878.30-21,280.43

Finding the Fourth Proportional to 51,274.45, 76,878.30 and 21,280.43

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Solution

The fourth proportional to 51,274.45, 76,878.30 and 21,280.43 is: 31,906.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,274.45 : 76,878.30 = 21,280.43 : x
  2. Step 2: Convert to fraction form
    51,274.45/76,878.30 = 21,280.43/x
  3. Step 3: Cross multiply
    51,274.45x = 76,878.30 × 21,280.43
  4. Step 4: Simplify right side
    51,274.45x = 1,636,003,553.67
  5. Step 5: Solve for x
    x = 1,636,003,553.67/51,274.45
  6. Step 6: Final answer
    x = 31,906.80

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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.