Home / 77,219.73-115,826.10-21,059.85

Finding the Fourth Proportional to 77,219.73, 115,826.10 and 21,059.85

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Solution

The fourth proportional to 77,219.73, 115,826.10 and 21,059.85 is: 31,588.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,219.73 : 115,826.10 = 21,059.85 : x
  2. Step 2: Convert to fraction form
    77,219.73/115,826.10 = 21,059.85/x
  3. Step 3: Cross multiply
    77,219.73x = 115,826.10 × 21,059.85
  4. Step 4: Simplify right side
    77,219.73x = 2,439,280,114.40
  5. Step 5: Solve for x
    x = 2,439,280,114.40/77,219.73
  6. Step 6: Final answer
    x = 31,588.82

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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.