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Finding the Fourth Proportional to 61,307.97, 91,912.35 and 19,166.37

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Solution

The fourth proportional to 61,307.97, 91,912.35 and 19,166.37 is: 28,734.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,307.97 : 91,912.35 = 19,166.37 : x
  2. Step 2: Convert to fraction form
    61,307.97/91,912.35 = 19,166.37/x
  3. Step 3: Cross multiply
    61,307.97x = 91,912.35 × 19,166.37
  4. Step 4: Simplify right side
    61,307.97x = 1,761,626,107.67
  5. Step 5: Solve for x
    x = 1,761,626,107.67/61,307.97
  6. Step 6: Final answer
    x = 28,734.05

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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.