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Finding the Fourth Proportional to 45,693.09, 68,539.64 and 12,413.16

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Solution

The fourth proportional to 45,693.09, 68,539.64 and 12,413.16 is: 18,619.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,693.09 : 68,539.64 = 12,413.16 : x
  2. Step 2: Convert to fraction form
    45,693.09/68,539.64 = 12,413.16/x
  3. Step 3: Cross multiply
    45,693.09x = 68,539.64 × 12,413.16
  4. Step 4: Simplify right side
    45,693.09x = 850,793,517.66
  5. Step 5: Solve for x
    x = 850,793,517.66/45,693.09
  6. Step 6: Final answer
    x = 18,619.74

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1.5x scale

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.