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Finding the Fourth Proportional to 54,380.80, 81,590.40 and 52,460.80

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Solution

The fourth proportional to 54,380.80, 81,590.40 and 52,460.80 is: 78,709.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,380.80 : 81,590.40 = 52,460.80 : x
  2. Step 2: Convert to fraction form
    54,380.80/81,590.40 = 52,460.80/x
  3. Step 3: Cross multiply
    54,380.80x = 81,590.40 × 52,460.80
  4. Step 4: Simplify right side
    54,380.80x = 4,280,297,656.32
  5. Step 5: Solve for x
    x = 4,280,297,656.32/54,380.80
  6. Step 6: Final answer
    x = 78,709.72

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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.