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Finding the Fourth Proportional to 92,581.77, 138,879.86 and 30,258.57

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Solution

The fourth proportional to 92,581.77, 138,879.86 and 30,258.57 is: 45,390.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,581.77 : 138,879.86 = 30,258.57 : x
  2. Step 2: Convert to fraction form
    92,581.77/138,879.86 = 30,258.57/x
  3. Step 3: Cross multiply
    92,581.77x = 138,879.86 × 30,258.57
  4. Step 4: Simplify right side
    92,581.77x = 4,202,305,814.11
  5. Step 5: Solve for x
    x = 4,202,305,814.11/92,581.77
  6. Step 6: Final answer
    x = 45,390.21

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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.