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Finding the Fourth Proportional to 54,289.01, 81,417.89 and 18,741.08

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Solution

The fourth proportional to 54,289.01, 81,417.89 and 18,741.08 is: 28,106.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,289.01 : 81,417.89 = 18,741.08 : x
  2. Step 2: Convert to fraction form
    54,289.01/81,417.89 = 18,741.08/x
  3. Step 3: Cross multiply
    54,289.01x = 81,417.89 × 18,741.08
  4. Step 4: Simplify right side
    54,289.01x = 1,525,858,689.13
  5. Step 5: Solve for x
    x = 1,525,858,689.13/54,289.01
  6. Step 6: Final answer
    x = 28,106.22

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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.