Home / 74,181.18-102,369.90-40,190.55

Finding the Fourth Proportional to 74,181.18, 102,369.90 and 40,190.55

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Solution

The fourth proportional to 74,181.18, 102,369.90 and 40,190.55 is: 55,462.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,181.18 : 102,369.90 = 40,190.55 : x
  2. Step 2: Convert to fraction form
    74,181.18/102,369.90 = 40,190.55/x
  3. Step 3: Cross multiply
    74,181.18x = 102,369.90 × 40,190.55
  4. Step 4: Simplify right side
    74,181.18x = 4,114,302,584.45
  5. Step 5: Solve for x
    x = 4,114,302,584.45/74,181.18
  6. Step 6: Final answer
    x = 55,462.89

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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.