Home / 51,511.05-77,229.68-19,894.05

Finding the Fourth Proportional to 51,511.05, 77,229.68 and 19,894.05

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Solution

The fourth proportional to 51,511.05, 77,229.68 and 19,894.05 is: 29,826.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,511.05 : 77,229.68 = 19,894.05 : x
  2. Step 2: Convert to fraction form
    51,511.05/77,229.68 = 19,894.05/x
  3. Step 3: Cross multiply
    51,511.05x = 77,229.68 × 19,894.05
  4. Step 4: Simplify right side
    51,511.05x = 1,536,411,015.93
  5. Step 5: Solve for x
    x = 1,536,411,015.93/51,511.05
  6. Step 6: Final answer
    x = 29,826.82

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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.