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Finding the Fourth Proportional to 52,871.62, 72,963.84 and 28,999.50

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Solution

The fourth proportional to 52,871.62, 72,963.84 and 28,999.50 is: 40,019.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,871.62 : 72,963.84 = 28,999.50 : x
  2. Step 2: Convert to fraction form
    52,871.62/72,963.84 = 28,999.50/x
  3. Step 3: Cross multiply
    52,871.62x = 72,963.84 × 28,999.50
  4. Step 4: Simplify right side
    52,871.62x = 2,115,914,878.08
  5. Step 5: Solve for x
    x = 2,115,914,878.08/52,871.62
  6. Step 6: Final answer
    x = 40,019.86

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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.