Home / 92,531.72-138,848.90-45,147.20

Finding the Fourth Proportional to 92,531.72, 138,848.90 and 45,147.20

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Solution

The fourth proportional to 92,531.72, 138,848.90 and 45,147.20 is: 67,745.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,531.72 : 138,848.90 = 45,147.20 : x
  2. Step 2: Convert to fraction form
    92,531.72/138,848.90 = 45,147.20/x
  3. Step 3: Cross multiply
    92,531.72x = 138,848.90 × 45,147.20
  4. Step 4: Simplify right side
    92,531.72x = 6,268,638,138.10
  5. Step 5: Solve for x
    x = 6,268,638,138.10/92,531.72
  6. Step 6: Final answer
    x = 67,745.83

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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.