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Finding the Fourth Proportional to 73,409.96, 110,114.94 and 20,812.88

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Solution

The fourth proportional to 73,409.96, 110,114.94 and 20,812.88 is: 31,219.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,409.96 : 110,114.94 = 20,812.88 : x
  2. Step 2: Convert to fraction form
    73,409.96/110,114.94 = 20,812.88/x
  3. Step 3: Cross multiply
    73,409.96x = 110,114.94 × 20,812.88
  4. Step 4: Simplify right side
    73,409.96x = 2,291,809,032.43
  5. Step 5: Solve for x
    x = 2,291,809,032.43/73,409.96
  6. Step 6: Final answer
    x = 31,219.32

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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.