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Finding the Fourth Proportional to 54,064.80, 81,097.12 and 18,996.40

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Solution

The fourth proportional to 54,064.80, 81,097.12 and 18,996.40 is: 28,494.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,064.80 : 81,097.12 = 18,996.40 : x
  2. Step 2: Convert to fraction form
    54,064.80/81,097.12 = 18,996.40/x
  3. Step 3: Cross multiply
    54,064.80x = 81,097.12 × 18,996.40
  4. Step 4: Simplify right side
    54,064.80x = 1,540,553,330.37
  5. Step 5: Solve for x
    x = 1,540,553,330.37/54,064.80
  6. Step 6: Final answer
    x = 28,494.57

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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.