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Finding the Fourth Proportional to 74,999.80, 112,413.30 and 30,604.60

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Solution

The fourth proportional to 74,999.80, 112,413.30 and 30,604.60 is: 45,871.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,999.80 : 112,413.30 = 30,604.60 : x
  2. Step 2: Convert to fraction form
    74,999.80/112,413.30 = 30,604.60/x
  3. Step 3: Cross multiply
    74,999.80x = 112,413.30 × 30,604.60
  4. Step 4: Simplify right side
    74,999.80x = 3,440,364,081.18
  5. Step 5: Solve for x
    x = 3,440,364,081.18/74,999.80
  6. Step 6: Final answer
    x = 45,871.64

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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.