Home / 74,936.12-103,408.77-40,945.78

Finding the Fourth Proportional to 74,936.12, 103,408.77 and 40,945.78

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Solution

The fourth proportional to 74,936.12, 103,408.77 and 40,945.78 is: 56,503.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,936.12 : 103,408.77 = 40,945.78 : x
  2. Step 2: Convert to fraction form
    74,936.12/103,408.77 = 40,945.78/x
  3. Step 3: Cross multiply
    74,936.12x = 103,408.77 × 40,945.78
  4. Step 4: Simplify right side
    74,936.12x = 4,234,152,487.97
  5. Step 5: Solve for x
    x = 4,234,152,487.97/74,936.12
  6. Step 6: Final answer
    x = 56,503.49

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1.5x scale

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.