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Finding the Fourth Proportional to 52,632.11, 72,632.82 and 28,758.78

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Solution

The fourth proportional to 52,632.11, 72,632.82 and 28,758.78 is: 39,687.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,632.11 : 72,632.82 = 28,758.78 : x
  2. Step 2: Convert to fraction form
    52,632.11/72,632.82 = 28,758.78/x
  3. Step 3: Cross multiply
    52,632.11x = 72,632.82 × 28,758.78
  4. Step 4: Simplify right side
    52,632.11x = 2,088,831,291.16
  5. Step 5: Solve for x
    x = 2,088,831,291.16/52,632.11
  6. Step 6: Final answer
    x = 39,687.39

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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.