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Finding the Fourth Proportional to 61,667.75, 92,501.64 and 20,114.75

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Solution

The fourth proportional to 61,667.75, 92,501.64 and 20,114.75 is: 30,172.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,667.75 : 92,501.64 = 20,114.75 : x
  2. Step 2: Convert to fraction form
    61,667.75/92,501.64 = 20,114.75/x
  3. Step 3: Cross multiply
    61,667.75x = 92,501.64 × 20,114.75
  4. Step 4: Simplify right side
    61,667.75x = 1,860,647,363.19
  5. Step 5: Solve for x
    x = 1,860,647,363.19/61,667.75
  6. Step 6: Final answer
    x = 30,172.13

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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.