Home / 81,399.33-112,330.09-47,413.35

Finding the Fourth Proportional to 81,399.33, 112,330.09 and 47,413.35

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Solution

The fourth proportional to 81,399.33, 112,330.09 and 47,413.35 is: 65,429.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,399.33 : 112,330.09 = 47,413.35 : x
  2. Step 2: Convert to fraction form
    81,399.33/112,330.09 = 47,413.35/x
  3. Step 3: Cross multiply
    81,399.33x = 112,330.09 × 47,413.35
  4. Step 4: Simplify right side
    81,399.33x = 5,325,945,931.97
  5. Step 5: Solve for x
    x = 5,325,945,931.97/81,399.33
  6. Step 6: Final answer
    x = 65,429.85

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1.5x scale

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.