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Finding the Fourth Proportional to 65,676.72, 98,529.48 and 21,307.96

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Solution

The fourth proportional to 65,676.72, 98,529.48 and 21,307.96 is: 31,966.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,676.72 : 98,529.48 = 21,307.96 : x
  2. Step 2: Convert to fraction form
    65,676.72/98,529.48 = 21,307.96/x
  3. Step 3: Cross multiply
    65,676.72x = 98,529.48 × 21,307.96
  4. Step 4: Simplify right side
    65,676.72x = 2,099,462,218.66
  5. Step 5: Solve for x
    x = 2,099,462,218.66/65,676.72
  6. Step 6: Final answer
    x = 31,966.61

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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.