Home / 74,108.03-102,269.25-40,116.78

Finding the Fourth Proportional to 74,108.03, 102,269.25 and 40,116.78

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Solution

The fourth proportional to 74,108.03, 102,269.25 and 40,116.78 is: 55,361.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,108.03 : 102,269.25 = 40,116.78 : x
  2. Step 2: Convert to fraction form
    74,108.03/102,269.25 = 40,116.78/x
  3. Step 3: Cross multiply
    74,108.03x = 102,269.25 × 40,116.78
  4. Step 4: Simplify right side
    74,108.03x = 4,102,713,003.02
  5. Step 5: Solve for x
    x = 4,102,713,003.02/74,108.03
  6. Step 6: Final answer
    x = 55,361.25

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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.