Home / 68,485.04-102,738.80-21,749.12

Finding the Fourth Proportional to 68,485.04, 102,738.80 and 21,749.12

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Solution

The fourth proportional to 68,485.04, 102,738.80 and 21,749.12 is: 32,627.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,485.04 : 102,738.80 = 21,749.12 : x
  2. Step 2: Convert to fraction form
    68,485.04/102,738.80 = 21,749.12/x
  3. Step 3: Cross multiply
    68,485.04x = 102,738.80 × 21,749.12
  4. Step 4: Simplify right side
    68,485.04x = 2,234,478,489.86
  5. Step 5: Solve for x
    x = 2,234,478,489.86/68,485.04
  6. Step 6: Final answer
    x = 32,627.25

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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.