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Finding the Fourth Proportional to 61,214.78, 91,766.81 and 21,762.67

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Solution

The fourth proportional to 61,214.78, 91,766.81 and 21,762.67 is: 32,624.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,214.78 : 91,766.81 = 21,762.67 : x
  2. Step 2: Convert to fraction form
    61,214.78/91,766.81 = 21,762.67/x
  3. Step 3: Cross multiply
    61,214.78x = 91,766.81 × 21,762.67
  4. Step 4: Simplify right side
    61,214.78x = 1,997,090,511.34
  5. Step 5: Solve for x
    x = 1,997,090,511.34/61,214.78
  6. Step 6: Final answer
    x = 32,624.32

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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.