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Finding the Fourth Proportional to 69,525, 104,307.12 and 19,605.57

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Solution

The fourth proportional to 69,525, 104,307.12 and 19,605.57 is: 29,413.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,525 : 104,307.12 = 19,605.57 : x
  2. Step 2: Convert to fraction form
    69,525/104,307.12 = 19,605.57/x
  3. Step 3: Cross multiply
    69,525x = 104,307.12 × 19,605.57
  4. Step 4: Simplify right side
    69,525x = 2,045,000,542.66
  5. Step 5: Solve for x
    x = 2,045,000,542.66/69,525
  6. Step 6: Final answer
    x = 29,413.89

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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.