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Finding the Fourth Proportional to 54,245.70, 81,356.40 and 35,656.20

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Solution

The fourth proportional to 54,245.70, 81,356.40 and 35,656.20 is: 53,476.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,245.70 : 81,356.40 = 35,656.20 : x
  2. Step 2: Convert to fraction form
    54,245.70/81,356.40 = 35,656.20/x
  3. Step 3: Cross multiply
    54,245.70x = 81,356.40 × 35,656.20
  4. Step 4: Simplify right side
    54,245.70x = 2,900,860,069.68
  5. Step 5: Solve for x
    x = 2,900,860,069.68/54,245.70
  6. Step 6: Final answer
    x = 53,476.31

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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.