Home / 74,413.56-102,690.78-40,879.56

Finding the Fourth Proportional to 74,413.56, 102,690.78 and 40,879.56

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Solution

The fourth proportional to 74,413.56, 102,690.78 and 40,879.56 is: 56,413.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,413.56 : 102,690.78 = 40,879.56 : x
  2. Step 2: Convert to fraction form
    74,413.56/102,690.78 = 40,879.56/x
  3. Step 3: Cross multiply
    74,413.56x = 102,690.78 × 40,879.56
  4. Step 4: Simplify right side
    74,413.56x = 4,197,953,902.46
  5. Step 5: Solve for x
    x = 4,197,953,902.46/74,413.56
  6. Step 6: Final answer
    x = 56,413.83

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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.