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Finding the Fourth Proportional to 54,445.83, 81,679.07 and 18,905.79

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Solution

The fourth proportional to 54,445.83, 81,679.07 and 18,905.79 is: 28,362.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,445.83 : 81,679.07 = 18,905.79 : x
  2. Step 2: Convert to fraction form
    54,445.83/81,679.07 = 18,905.79/x
  3. Step 3: Cross multiply
    54,445.83x = 81,679.07 × 18,905.79
  4. Step 4: Simplify right side
    54,445.83x = 1,544,207,344.82
  5. Step 5: Solve for x
    x = 1,544,207,344.82/54,445.83
  6. Step 6: Final answer
    x = 28,362.27

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1.5x scale

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.