Home / 54,645.25-81,913.15-21,319.47

Finding the Fourth Proportional to 54,645.25, 81,913.15 and 21,319.47

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Solution

The fourth proportional to 54,645.25, 81,913.15 and 21,319.47 is: 31,957.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,645.25 : 81,913.15 = 21,319.47 : x
  2. Step 2: Convert to fraction form
    54,645.25/81,913.15 = 21,319.47/x
  3. Step 3: Cross multiply
    54,645.25x = 81,913.15 × 21,319.47
  4. Step 4: Simplify right side
    54,645.25x = 1,746,344,944.03
  5. Step 5: Solve for x
    x = 1,746,344,944.03/54,645.25
  6. Step 6: Final answer
    x = 31,957.85

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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.