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Finding the Fourth Proportional to 74,409.60, 111,672.96 and 65,662.08

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Solution

The fourth proportional to 74,409.60, 111,672.96 and 65,662.08 is: 98,544.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,409.60 : 111,672.96 = 65,662.08 : x
  2. Step 2: Convert to fraction form
    74,409.60/111,672.96 = 65,662.08/x
  3. Step 3: Cross multiply
    74,409.60x = 111,672.96 × 65,662.08
  4. Step 4: Simplify right side
    74,409.60x = 7,332,678,833.36
  5. Step 5: Solve for x
    x = 7,332,678,833.36/74,409.60
  6. Step 6: Final answer
    x = 98,544.80

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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.