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Finding the Fourth Proportional to 72,896.74, 100,579.80 and 41,065.60

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Solution

The fourth proportional to 72,896.74, 100,579.80 and 41,065.60 is: 56,660.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,896.74 : 100,579.80 = 41,065.60 : x
  2. Step 2: Convert to fraction form
    72,896.74/100,579.80 = 41,065.60/x
  3. Step 3: Cross multiply
    72,896.74x = 100,579.80 × 41,065.60
  4. Step 4: Simplify right side
    72,896.74x = 4,130,369,834.88
  5. Step 5: Solve for x
    x = 4,130,369,834.88/72,896.74
  6. Step 6: Final answer
    x = 56,660.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.