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Finding the Fourth Proportional to 61,317.76, 91,986.24 and 19,768.96

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Solution

The fourth proportional to 61,317.76, 91,986.24 and 19,768.96 is: 29,656.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,317.76 : 91,986.24 = 19,768.96 : x
  2. Step 2: Convert to fraction form
    61,317.76/91,986.24 = 19,768.96/x
  3. Step 3: Cross multiply
    61,317.76x = 91,986.24 × 19,768.96
  4. Step 4: Simplify right side
    61,317.76x = 1,818,472,299.11
  5. Step 5: Solve for x
    x = 1,818,472,299.11/61,317.76
  6. Step 6: Final answer
    x = 29,656.54

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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.