Home / 76,746.21-105,142.69-73,869.85

Finding the Fourth Proportional to 76,746.21, 105,142.69 and 73,869.85

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Solution

The fourth proportional to 76,746.21, 105,142.69 and 73,869.85 is: 101,202.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,746.21 : 105,142.69 = 73,869.85 : x
  2. Step 2: Convert to fraction form
    76,746.21/105,142.69 = 73,869.85/x
  3. Step 3: Cross multiply
    76,746.21x = 105,142.69 × 73,869.85
  4. Step 4: Simplify right side
    76,746.21x = 7,766,874,753.05
  5. Step 5: Solve for x
    x = 7,766,874,753.05/76,746.21
  6. Step 6: Final answer
    x = 101,202.06

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.