Home / 69,670.78-96,145.70-39,456.11

Finding the Fourth Proportional to 69,670.78, 96,145.70 and 39,456.11

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Solution

The fourth proportional to 69,670.78, 96,145.70 and 39,456.11 is: 54,449.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,670.78 : 96,145.70 = 39,456.11 : x
  2. Step 2: Convert to fraction form
    69,670.78/96,145.70 = 39,456.11/x
  3. Step 3: Cross multiply
    69,670.78x = 96,145.70 × 39,456.11
  4. Step 4: Simplify right side
    69,670.78x = 3,793,535,413.87
  5. Step 5: Solve for x
    x = 3,793,535,413.87/69,670.78
  6. Step 6: Final answer
    x = 54,449.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.