Home / 54,280.20-81,428.40-19,217.10

Finding the Fourth Proportional to 54,280.20, 81,428.40 and 19,217.10

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Solution

The fourth proportional to 54,280.20, 81,428.40 and 19,217.10 is: 28,828.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,280.20 : 81,428.40 = 19,217.10 : x
  2. Step 2: Convert to fraction form
    54,280.20/81,428.40 = 19,217.10/x
  3. Step 3: Cross multiply
    54,280.20x = 81,428.40 × 19,217.10
  4. Step 4: Simplify right side
    54,280.20x = 1,564,817,705.64
  5. Step 5: Solve for x
    x = 1,564,817,705.64/54,280.20
  6. Step 6: Final answer
    x = 28,828.52

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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.