Home / 74,006.43-102,128.66-40,014.68

Finding the Fourth Proportional to 74,006.43, 102,128.66 and 40,014.68

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Solution

The fourth proportional to 74,006.43, 102,128.66 and 40,014.68 is: 55,220.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,006.43 : 102,128.66 = 40,014.68 : x
  2. Step 2: Convert to fraction form
    74,006.43/102,128.66 = 40,014.68/x
  3. Step 3: Cross multiply
    74,006.43x = 102,128.66 × 40,014.68
  4. Step 4: Simplify right side
    74,006.43x = 4,086,644,938.01
  5. Step 5: Solve for x
    x = 4,086,644,938.01/74,006.43
  6. Step 6: Final answer
    x = 55,220.13

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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.