Home / 54,342.70-81,518.10-19,277.80

Finding the Fourth Proportional to 54,342.70, 81,518.10 and 19,277.80

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Solution

The fourth proportional to 54,342.70, 81,518.10 and 19,277.80 is: 28,918.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,342.70 : 81,518.10 = 19,277.80 : x
  2. Step 2: Convert to fraction form
    54,342.70/81,518.10 = 19,277.80/x
  3. Step 3: Cross multiply
    54,342.70x = 81,518.10 × 19,277.80
  4. Step 4: Simplify right side
    54,342.70x = 1,571,489,628.18
  5. Step 5: Solve for x
    x = 1,571,489,628.18/54,342.70
  6. Step 6: Final answer
    x = 28,918.14

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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.