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Finding the Fourth Proportional to 65,250.09, 97,881.62 and 20,865.69

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Solution

The fourth proportional to 65,250.09, 97,881.62 and 20,865.69 is: 31,300.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,250.09 : 97,881.62 = 20,865.69 : x
  2. Step 2: Convert to fraction form
    65,250.09/97,881.62 = 20,865.69/x
  3. Step 3: Cross multiply
    65,250.09x = 97,881.62 × 20,865.69
  4. Step 4: Simplify right side
    65,250.09x = 2,042,367,539.62
  5. Step 5: Solve for x
    x = 2,042,367,539.62/65,250.09
  6. Step 6: Final answer
    x = 31,300.61

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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.