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Finding the Fourth Proportional to 52,671.45, 72,686.11 and 28,797.87

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Solution

The fourth proportional to 52,671.45, 72,686.11 and 28,797.87 is: 39,740.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,671.45 : 72,686.11 = 28,797.87 : x
  2. Step 2: Convert to fraction form
    52,671.45/72,686.11 = 28,797.87/x
  3. Step 3: Cross multiply
    52,671.45x = 72,686.11 × 28,797.87
  4. Step 4: Simplify right side
    52,671.45x = 2,093,205,401.16
  5. Step 5: Solve for x
    x = 2,093,205,401.16/52,671.45
  6. Step 6: Final answer
    x = 39,740.79

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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.