Home / 74,864.85-112,395.70-68,675.64

Finding the Fourth Proportional to 74,864.85, 112,395.70 and 68,675.64

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Solution

The fourth proportional to 74,864.85, 112,395.70 and 68,675.64 is: 103,103.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,864.85 : 112,395.70 = 68,675.64 : x
  2. Step 2: Convert to fraction form
    74,864.85/112,395.70 = 68,675.64/x
  3. Step 3: Cross multiply
    74,864.85x = 112,395.70 × 68,675.64
  4. Step 4: Simplify right side
    74,864.85x = 7,718,846,630.75
  5. Step 5: Solve for x
    x = 7,718,846,630.75/74,864.85
  6. Step 6: Final answer
    x = 103,103.75

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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.