Home / 74,991.32-112,486.94-68,733.74

Finding the Fourth Proportional to 74,991.32, 112,486.94 and 68,733.74

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Solution

The fourth proportional to 74,991.32, 112,486.94 and 68,733.74 is: 103,100.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,991.32 : 112,486.94 = 68,733.74 : x
  2. Step 2: Convert to fraction form
    74,991.32/112,486.94 = 68,733.74/x
  3. Step 3: Cross multiply
    74,991.32x = 112,486.94 × 68,733.74
  4. Step 4: Simplify right side
    74,991.32x = 7,731,648,087.36
  5. Step 5: Solve for x
    x = 7,731,648,087.36/74,991.32
  6. Step 6: Final answer
    x = 103,100.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.