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Finding the Fourth Proportional to 39,671.08, 54,745.66 and 21,766.08

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Solution

The fourth proportional to 39,671.08, 54,745.66 and 21,766.08 is: 30,036.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,671.08 : 54,745.66 = 21,766.08 : x
  2. Step 2: Convert to fraction form
    39,671.08/54,745.66 = 21,766.08/x
  3. Step 3: Cross multiply
    39,671.08x = 54,745.66 × 21,766.08
  4. Step 4: Simplify right side
    39,671.08x = 1,191,598,386.15
  5. Step 5: Solve for x
    x = 1,191,598,386.15/39,671.08
  6. Step 6: Final answer
    x = 30,036.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.