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Finding the Fourth Proportional to 66,060, 99,100.32 and 21,676.66

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Solution

The fourth proportional to 66,060, 99,100.32 and 21,676.66 is: 32,518.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,060 : 99,100.32 = 21,676.66 : x
  2. Step 2: Convert to fraction form
    66,060/99,100.32 = 21,676.66/x
  3. Step 3: Cross multiply
    66,060x = 99,100.32 × 21,676.66
  4. Step 4: Simplify right side
    66,060x = 2,148,163,942.53
  5. Step 5: Solve for x
    x = 2,148,163,942.53/66,060
  6. Step 6: Final answer
    x = 32,518.38

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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.