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Finding the Fourth Proportional to 80,117.76, 120,071.44 and 58,958.72

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Solution

The fourth proportional to 80,117.76, 120,071.44 and 58,958.72 is: 88,360.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,117.76 : 120,071.44 = 58,958.72 : x
  2. Step 2: Convert to fraction form
    80,117.76/120,071.44 = 58,958.72/x
  3. Step 3: Cross multiply
    80,117.76x = 120,071.44 × 58,958.72
  4. Step 4: Simplify right side
    80,117.76x = 7,079,258,410.96
  5. Step 5: Solve for x
    x = 7,079,258,410.96/80,117.76
  6. Step 6: Final answer
    x = 88,360.66

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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.