Home / 54,445.90-81,679.16-18,905.83

Finding the Fourth Proportional to 54,445.90, 81,679.16 and 18,905.83

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Solution

The fourth proportional to 54,445.90, 81,679.16 and 18,905.83 is: 28,362.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,445.90 : 81,679.16 = 18,905.83 : x
  2. Step 2: Convert to fraction form
    54,445.90/81,679.16 = 18,905.83/x
  3. Step 3: Cross multiply
    54,445.90x = 81,679.16 × 18,905.83
  4. Step 4: Simplify right side
    54,445.90x = 1,544,211,810.58
  5. Step 5: Solve for x
    x = 1,544,211,810.58/54,445.90
  6. Step 6: Final answer
    x = 28,362.32

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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.