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Finding the Fourth Proportional to 52,870.64, 72,961.53 and 28,997.78

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Solution

The fourth proportional to 52,870.64, 72,961.53 and 28,997.78 is: 40,016.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,870.64 : 72,961.53 = 28,997.78 : x
  2. Step 2: Convert to fraction form
    52,870.64/72,961.53 = 28,997.78/x
  3. Step 3: Cross multiply
    52,870.64x = 72,961.53 × 28,997.78
  4. Step 4: Simplify right side
    52,870.64x = 2,115,722,395.40
  5. Step 5: Solve for x
    x = 2,115,722,395.40/52,870.64
  6. Step 6: Final answer
    x = 40,016.96

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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.