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Finding the Fourth Proportional to 53,506.80, 80,260.20 and 52,729.20

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Solution

The fourth proportional to 53,506.80, 80,260.20 and 52,729.20 is: 79,093.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,506.80 : 80,260.20 = 52,729.20 : x
  2. Step 2: Convert to fraction form
    53,506.80/80,260.20 = 52,729.20/x
  3. Step 3: Cross multiply
    53,506.80x = 80,260.20 × 52,729.20
  4. Step 4: Simplify right side
    53,506.80x = 4,232,056,137.84
  5. Step 5: Solve for x
    x = 4,232,056,137.84/53,506.80
  6. Step 6: Final answer
    x = 79,093.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.