Home / 54,455.99-81,652.26-21,137.13

Finding the Fourth Proportional to 54,455.99, 81,652.26 and 21,137.13

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Solution

The fourth proportional to 54,455.99, 81,652.26 and 21,137.13 is: 31,693.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,455.99 : 81,652.26 = 21,137.13 : x
  2. Step 2: Convert to fraction form
    54,455.99/81,652.26 = 21,137.13/x
  3. Step 3: Cross multiply
    54,455.99x = 81,652.26 × 21,137.13
  4. Step 4: Simplify right side
    54,455.99x = 1,725,894,026.15
  5. Step 5: Solve for x
    x = 1,725,894,026.15/54,455.99
  6. Step 6: Final answer
    x = 31,693.38

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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.