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Finding the Fourth Proportional to 54,043.67, 74,579.03 and 30,172.57

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Solution

The fourth proportional to 54,043.67, 74,579.03 and 30,172.57 is: 41,637.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,043.67 : 74,579.03 = 30,172.57 : x
  2. Step 2: Convert to fraction form
    54,043.67/74,579.03 = 30,172.57/x
  3. Step 3: Cross multiply
    54,043.67x = 74,579.03 × 30,172.57
  4. Step 4: Simplify right side
    54,043.67x = 2,250,240,779.04
  5. Step 5: Solve for x
    x = 2,250,240,779.04/54,043.67
  6. Step 6: Final answer
    x = 41,637.45

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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.