Home / 74,161.43-102,361.08-42,348.78

Finding the Fourth Proportional to 74,161.43, 102,361.08 and 42,348.78

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Solution

The fourth proportional to 74,161.43, 102,361.08 and 42,348.78 is: 58,451.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,161.43 : 102,361.08 = 42,348.78 : x
  2. Step 2: Convert to fraction form
    74,161.43/102,361.08 = 42,348.78/x
  3. Step 3: Cross multiply
    74,161.43x = 102,361.08 × 42,348.78
  4. Step 4: Simplify right side
    74,161.43x = 4,334,866,857.48
  5. Step 5: Solve for x
    x = 4,334,866,857.48/74,161.43
  6. Step 6: Final answer
    x = 58,451.77

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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.