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Finding the Fourth Proportional to 54,809.87, 75,641.04 and 30,940.58

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Solution

The fourth proportional to 54,809.87, 75,641.04 and 30,940.58 is: 42,699.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,809.87 : 75,641.04 = 30,940.58 : x
  2. Step 2: Convert to fraction form
    54,809.87/75,641.04 = 30,940.58/x
  3. Step 3: Cross multiply
    54,809.87x = 75,641.04 × 30,940.58
  4. Step 4: Simplify right side
    54,809.87x = 2,340,377,838.51
  5. Step 5: Solve for x
    x = 2,340,377,838.51/54,809.87
  6. Step 6: Final answer
    x = 42,699.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.