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Finding the Fourth Proportional to 79,365.56, 118,764.08 and 68,728.76

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Solution

The fourth proportional to 79,365.56, 118,764.08 and 68,728.76 is: 102,846.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,365.56 : 118,764.08 = 68,728.76 : x
  2. Step 2: Convert to fraction form
    79,365.56/118,764.08 = 68,728.76/x
  3. Step 3: Cross multiply
    79,365.56x = 118,764.08 × 68,728.76
  4. Step 4: Simplify right side
    79,365.56x = 8,162,507,950.94
  5. Step 5: Solve for x
    x = 8,162,507,950.94/79,365.56
  6. Step 6: Final answer
    x = 102,846.98

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1.5x scale

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.