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Finding the Fourth Proportional to 52,787.58, 72,843.75 and 28,909.50

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Solution

The fourth proportional to 52,787.58, 72,843.75 and 28,909.50 is: 39,893.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,787.58 : 72,843.75 = 28,909.50 : x
  2. Step 2: Convert to fraction form
    52,787.58/72,843.75 = 28,909.50/x
  3. Step 3: Cross multiply
    52,787.58x = 72,843.75 × 28,909.50
  4. Step 4: Simplify right side
    52,787.58x = 2,105,876,390.63
  5. Step 5: Solve for x
    x = 2,105,876,390.63/52,787.58
  6. Step 6: Final answer
    x = 39,893.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.