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Finding the Fourth Proportional to 54,600, 81,900.45 and 15,160.19

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Solution

The fourth proportional to 54,600, 81,900.45 and 15,160.19 is: 22,740.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,600 : 81,900.45 = 15,160.19 : x
  2. Step 2: Convert to fraction form
    54,600/81,900.45 = 15,160.19/x
  3. Step 3: Cross multiply
    54,600x = 81,900.45 × 15,160.19
  4. Step 4: Simplify right side
    54,600x = 1,241,625,973.58
  5. Step 5: Solve for x
    x = 1,241,625,973.58/54,600
  6. Step 6: Final answer
    x = 22,740.40

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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.