Home / 77,263.31-115,876.23-21,103.68

Finding the Fourth Proportional to 77,263.31, 115,876.23 and 21,103.68

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Solution

The fourth proportional to 77,263.31, 115,876.23 and 21,103.68 is: 31,650.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,263.31 : 115,876.23 = 21,103.68 : x
  2. Step 2: Convert to fraction form
    77,263.31/115,876.23 = 21,103.68/x
  3. Step 3: Cross multiply
    77,263.31x = 115,876.23 × 21,103.68
  4. Step 4: Simplify right side
    77,263.31x = 2,445,414,363.85
  5. Step 5: Solve for x
    x = 2,445,414,363.85/77,263.31
  6. Step 6: Final answer
    x = 31,650.40

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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.