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Finding the Fourth Proportional to 52,865.25, 72,956.15 and 28,992.79

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Solution

The fourth proportional to 52,865.25, 72,956.15 and 28,992.79 is: 40,011.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,865.25 : 72,956.15 = 28,992.79 : x
  2. Step 2: Convert to fraction form
    52,865.25/72,956.15 = 28,992.79/x
  3. Step 3: Cross multiply
    52,865.25x = 72,956.15 × 28,992.79
  4. Step 4: Simplify right side
    52,865.25x = 2,115,202,336.16
  5. Step 5: Solve for x
    x = 2,115,202,336.16/52,865.25
  6. Step 6: Final answer
    x = 40,011.20

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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.