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Finding the Fourth Proportional to 76,951.80, 115,413.12 and 27,020.16

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Solution

The fourth proportional to 76,951.80, 115,413.12 and 27,020.16 is: 40,525.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,951.80 : 115,413.12 = 27,020.16 : x
  2. Step 2: Convert to fraction form
    76,951.80/115,413.12 = 27,020.16/x
  3. Step 3: Cross multiply
    76,951.80x = 115,413.12 × 27,020.16
  4. Step 4: Simplify right side
    76,951.80x = 3,118,480,968.50
  5. Step 5: Solve for x
    x = 3,118,480,968.50/76,951.80
  6. Step 6: Final answer
    x = 40,525.12

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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.