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Finding the Fourth Proportional to 74,201.86, 111,303 and 21,612.64

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Solution

The fourth proportional to 74,201.86, 111,303 and 21,612.64 is: 32,419.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,201.86 : 111,303 = 21,612.64 : x
  2. Step 2: Convert to fraction form
    74,201.86/111,303 = 21,612.64/x
  3. Step 3: Cross multiply
    74,201.86x = 111,303 × 21,612.64
  4. Step 4: Simplify right side
    74,201.86x = 2,405,551,669.92
  5. Step 5: Solve for x
    x = 2,405,551,669.92/74,201.86
  6. Step 6: Final answer
    x = 32,419.02

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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.