Home / 74,719.94-103,112.84-40,728.42

Finding the Fourth Proportional to 74,719.94, 103,112.84 and 40,728.42

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Solution

The fourth proportional to 74,719.94, 103,112.84 and 40,728.42 is: 56,204.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,719.94 : 103,112.84 = 40,728.42 : x
  2. Step 2: Convert to fraction form
    74,719.94/103,112.84 = 40,728.42/x
  3. Step 3: Cross multiply
    74,719.94x = 103,112.84 × 40,728.42
  4. Step 4: Simplify right side
    74,719.94x = 4,199,623,054.91
  5. Step 5: Solve for x
    x = 4,199,623,054.91/74,719.94
  6. Step 6: Final answer
    x = 56,204.85

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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.