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Finding the Fourth Proportional to 79,683.44, 119,729.16 and 60,146

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Solution

The fourth proportional to 79,683.44, 119,729.16 and 60,146 is: 90,372.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,683.44 : 119,729.16 = 60,146 : x
  2. Step 2: Convert to fraction form
    79,683.44/119,729.16 = 60,146/x
  3. Step 3: Cross multiply
    79,683.44x = 119,729.16 × 60,146
  4. Step 4: Simplify right side
    79,683.44x = 7,201,230,057.36
  5. Step 5: Solve for x
    x = 7,201,230,057.36/79,683.44
  6. Step 6: Final answer
    x = 90,372.98

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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.