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Finding the Fourth Proportional to 61,267.80, 91,880.10 and 21,826.20

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Solution

The fourth proportional to 61,267.80, 91,880.10 and 21,826.20 is: 32,731.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,267.80 : 91,880.10 = 21,826.20 : x
  2. Step 2: Convert to fraction form
    61,267.80/91,880.10 = 21,826.20/x
  3. Step 3: Cross multiply
    61,267.80x = 91,880.10 × 21,826.20
  4. Step 4: Simplify right side
    61,267.80x = 2,005,393,438.62
  5. Step 5: Solve for x
    x = 2,005,393,438.62/61,267.80
  6. Step 6: Final answer
    x = 32,731.61

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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.