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Finding the Fourth Proportional to 54,265.80, 81,339.30 and 19,187.40

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Solution

The fourth proportional to 54,265.80, 81,339.30 and 19,187.40 is: 28,760.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,265.80 : 81,339.30 = 19,187.40 : x
  2. Step 2: Convert to fraction form
    54,265.80/81,339.30 = 19,187.40/x
  3. Step 3: Cross multiply
    54,265.80x = 81,339.30 × 19,187.40
  4. Step 4: Simplify right side
    54,265.80x = 1,560,689,684.82
  5. Step 5: Solve for x
    x = 1,560,689,684.82/54,265.80
  6. Step 6: Final answer
    x = 28,760.10

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1.5x scale

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.