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Finding the Fourth Proportional to 52,762.97, 72,812.89 and 28,889.64

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Solution

The fourth proportional to 52,762.97, 72,812.89 and 28,889.64 is: 39,867.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,762.97 : 72,812.89 = 28,889.64 : x
  2. Step 2: Convert to fraction form
    52,762.97/72,812.89 = 28,889.64/x
  3. Step 3: Cross multiply
    52,762.97x = 72,812.89 × 28,889.64
  4. Step 4: Simplify right side
    52,762.97x = 2,103,538,179.46
  5. Step 5: Solve for x
    x = 2,103,538,179.46/52,762.97
  6. Step 6: Final answer
    x = 39,867.70

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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.