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Finding the Fourth Proportional to 110,709.60, 166,064.40 and 40,579.80

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Solution

The fourth proportional to 110,709.60, 166,064.40 and 40,579.80 is: 60,869.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,709.60 : 166,064.40 = 40,579.80 : x
  2. Step 2: Convert to fraction form
    110,709.60/166,064.40 = 40,579.80/x
  3. Step 3: Cross multiply
    110,709.60x = 166,064.40 × 40,579.80
  4. Step 4: Simplify right side
    110,709.60x = 6,738,860,139.12
  5. Step 5: Solve for x
    x = 6,738,860,139.12/110,709.60
  6. Step 6: Final answer
    x = 60,869.70

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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.