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Finding the Fourth Proportional to 61,661, 92,506.08 and 20,108

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Solution

The fourth proportional to 61,661, 92,506.08 and 20,108 is: 30,166.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,661 : 92,506.08 = 20,108 : x
  2. Step 2: Convert to fraction form
    61,661/92,506.08 = 20,108/x
  3. Step 3: Cross multiply
    61,661x = 92,506.08 × 20,108
  4. Step 4: Simplify right side
    61,661x = 1,860,112,256.64
  5. Step 5: Solve for x
    x = 1,860,112,256.64/61,661
  6. Step 6: Final answer
    x = 30,166.75

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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.