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Finding the Fourth Proportional to 33,156.60, 49,702.95 and 21,276.87

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Solution

The fourth proportional to 33,156.60, 49,702.95 and 21,276.87 is: 31,894.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,156.60 : 49,702.95 = 21,276.87 : x
  2. Step 2: Convert to fraction form
    33,156.60/49,702.95 = 21,276.87/x
  3. Step 3: Cross multiply
    33,156.60x = 49,702.95 × 21,276.87
  4. Step 4: Simplify right side
    33,156.60x = 1,057,523,205.77
  5. Step 5: Solve for x
    x = 1,057,523,205.77/33,156.60
  6. Step 6: Final answer
    x = 31,894.80

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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.