Home / 74,142.50-102,316.70-40,151.03

Finding the Fourth Proportional to 74,142.50, 102,316.70 and 40,151.03

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Solution

The fourth proportional to 74,142.50, 102,316.70 and 40,151.03 is: 55,408.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,142.50 : 102,316.70 = 40,151.03 : x
  2. Step 2: Convert to fraction form
    74,142.50/102,316.70 = 40,151.03/x
  3. Step 3: Cross multiply
    74,142.50x = 102,316.70 × 40,151.03
  4. Step 4: Simplify right side
    74,142.50x = 4,108,120,379.62
  5. Step 5: Solve for x
    x = 4,108,120,379.62/74,142.50
  6. Step 6: Final answer
    x = 55,408.44

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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.