Home / 68,558.20-102,875.70-29,108.60

Finding the Fourth Proportional to 68,558.20, 102,875.70 and 29,108.60

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Solution

The fourth proportional to 68,558.20, 102,875.70 and 29,108.60 is: 43,679.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,558.20 : 102,875.70 = 29,108.60 : x
  2. Step 2: Convert to fraction form
    68,558.20/102,875.70 = 29,108.60/x
  3. Step 3: Cross multiply
    68,558.20x = 102,875.70 × 29,108.60
  4. Step 4: Simplify right side
    68,558.20x = 2,994,567,601.02
  5. Step 5: Solve for x
    x = 2,994,567,601.02/68,558.20
  6. Step 6: Final answer
    x = 43,679.20

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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.