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Finding the Fourth Proportional to 54,628.40, 81,942.60 and 19,555.40

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Solution

The fourth proportional to 54,628.40, 81,942.60 and 19,555.40 is: 29,333.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,628.40 : 81,942.60 = 19,555.40 : x
  2. Step 2: Convert to fraction form
    54,628.40/81,942.60 = 19,555.40/x
  3. Step 3: Cross multiply
    54,628.40x = 81,942.60 × 19,555.40
  4. Step 4: Simplify right side
    54,628.40x = 1,602,420,320.04
  5. Step 5: Solve for x
    x = 1,602,420,320.04/54,628.40
  6. Step 6: Final answer
    x = 29,333.10

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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.