Home / 74,407.72-102,683.43-40,416.87

Finding the Fourth Proportional to 74,407.72, 102,683.43 and 40,416.87

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Solution

The fourth proportional to 74,407.72, 102,683.43 and 40,416.87 is: 55,775.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,407.72 : 102,683.43 = 40,416.87 : x
  2. Step 2: Convert to fraction form
    74,407.72/102,683.43 = 40,416.87/x
  3. Step 3: Cross multiply
    74,407.72x = 102,683.43 × 40,416.87
  4. Step 4: Simplify right side
    74,407.72x = 4,150,143,226.53
  5. Step 5: Solve for x
    x = 4,150,143,226.53/74,407.72
  6. Step 6: Final answer
    x = 55,775.71

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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.