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Finding the Fourth Proportional to 74,635.16, 111,645.16 and 68,065.94

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Solution

The fourth proportional to 74,635.16, 111,645.16 and 68,065.94 is: 101,818.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,635.16 : 111,645.16 = 68,065.94 : x
  2. Step 2: Convert to fraction form
    74,635.16/111,645.16 = 68,065.94/x
  3. Step 3: Cross multiply
    74,635.16x = 111,645.16 × 68,065.94
  4. Step 4: Simplify right side
    74,635.16x = 7,599,232,870.80
  5. Step 5: Solve for x
    x = 7,599,232,870.80/74,635.16
  6. Step 6: Final answer
    x = 101,818.41

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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.