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Finding the Fourth Proportional to 54,745.90, 82,121.55 and 28,501.90

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Solution

The fourth proportional to 54,745.90, 82,121.55 and 28,501.90 is: 42,754.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,745.90 : 82,121.55 = 28,501.90 : x
  2. Step 2: Convert to fraction form
    54,745.90/82,121.55 = 28,501.90/x
  3. Step 3: Cross multiply
    54,745.90x = 82,121.55 × 28,501.90
  4. Step 4: Simplify right side
    54,745.90x = 2,340,620,205.95
  5. Step 5: Solve for x
    x = 2,340,620,205.95/54,745.90
  6. Step 6: Final answer
    x = 42,754.26

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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.