Home / 45,415.10-68,114.55-28,745.30

Finding the Fourth Proportional to 45,415.10, 68,114.55 and 28,745.30

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Solution

The fourth proportional to 45,415.10, 68,114.55 and 28,745.30 is: 43,112.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,415.10 : 68,114.55 = 28,745.30 : x
  2. Step 2: Convert to fraction form
    45,415.10/68,114.55 = 28,745.30/x
  3. Step 3: Cross multiply
    45,415.10x = 68,114.55 × 28,745.30
  4. Step 4: Simplify right side
    45,415.10x = 1,957,973,174.12
  5. Step 5: Solve for x
    x = 1,957,973,174.12/45,415.10
  6. Step 6: Final answer
    x = 43,112.82

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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.