Home / 54,281.43-81,442.65-21,003.49

Finding the Fourth Proportional to 54,281.43, 81,442.65 and 21,003.49

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Solution

The fourth proportional to 54,281.43, 81,442.65 and 21,003.49 is: 31,513.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,281.43 : 81,442.65 = 21,003.49 : x
  2. Step 2: Convert to fraction form
    54,281.43/81,442.65 = 21,003.49/x
  3. Step 3: Cross multiply
    54,281.43x = 81,442.65 × 21,003.49
  4. Step 4: Simplify right side
    54,281.43x = 1,710,579,884.85
  5. Step 5: Solve for x
    x = 1,710,579,884.85/54,281.43
  6. Step 6: Final answer
    x = 31,513.17

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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.