Home / 74,143.09-102,324.82-42,316.79

Finding the Fourth Proportional to 74,143.09, 102,324.82 and 42,316.79

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Solution

The fourth proportional to 74,143.09, 102,324.82 and 42,316.79 is: 58,401.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,143.09 : 102,324.82 = 42,316.79 : x
  2. Step 2: Convert to fraction form
    74,143.09/102,324.82 = 42,316.79/x
  3. Step 3: Cross multiply
    74,143.09x = 102,324.82 × 42,316.79
  4. Step 4: Simplify right side
    74,143.09x = 4,330,057,919.73
  5. Step 5: Solve for x
    x = 4,330,057,919.73/74,143.09
  6. Step 6: Final answer
    x = 58,401.37

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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.