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Finding the Fourth Proportional to 92,420.96, 127,540.96 and 49,979.52

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Solution

The fourth proportional to 92,420.96, 127,540.96 and 49,979.52 is: 68,971.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,420.96 : 127,540.96 = 49,979.52 : x
  2. Step 2: Convert to fraction form
    92,420.96/127,540.96 = 49,979.52/x
  3. Step 3: Cross multiply
    92,420.96x = 127,540.96 × 49,979.52
  4. Step 4: Simplify right side
    92,420.96x = 6,374,435,961.14
  5. Step 5: Solve for x
    x = 6,374,435,961.14/92,420.96
  6. Step 6: Final answer
    x = 68,971.76

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1.5x scale

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.