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Finding the Fourth Proportional to 54,795.70, 82,225.95 and 19,730.80

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Solution

The fourth proportional to 54,795.70, 82,225.95 and 19,730.80 is: 29,607.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,795.70 : 82,225.95 = 19,730.80 : x
  2. Step 2: Convert to fraction form
    54,795.70/82,225.95 = 19,730.80/x
  3. Step 3: Cross multiply
    54,795.70x = 82,225.95 × 19,730.80
  4. Step 4: Simplify right side
    54,795.70x = 1,622,383,774.26
  5. Step 5: Solve for x
    x = 1,622,383,774.26/54,795.70
  6. Step 6: Final answer
    x = 29,607.87

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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.