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Finding the Fourth Proportional to 80,484.93, 120,806.87 and 60,424.70

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Solution

The fourth proportional to 80,484.93, 120,806.87 and 60,424.70 is: 90,696.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,484.93 : 120,806.87 = 60,424.70 : x
  2. Step 2: Convert to fraction form
    80,484.93/120,806.87 = 60,424.70/x
  3. Step 3: Cross multiply
    80,484.93x = 120,806.87 × 60,424.70
  4. Step 4: Simplify right side
    80,484.93x = 7,299,717,971.53
  5. Step 5: Solve for x
    x = 7,299,717,971.53/80,484.93
  6. Step 6: Final answer
    x = 90,696.71

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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.