Home / 8,085,608.80-12,128,413.20-5,215,827.40

Finding the Fourth Proportional to 8,085,608.80, 12,128,413.20 and 5,215,827.40

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Solution

The fourth proportional to 8,085,608.80, 12,128,413.20 and 5,215,827.40 is: 7,823,741.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,085,608.80 : 12,128,413.20 = 5,215,827.40 : x
  2. Step 2: Convert to fraction form
    8,085,608.80/12,128,413.20 = 5,215,827.40/x
  3. Step 3: Cross multiply
    8,085,608.80x = 12,128,413.20 × 5,215,827.40
  4. Step 4: Simplify right side
    8,085,608.80x = 63,259,709,887,081.68
  5. Step 5: Solve for x
    x = 63,259,709,887,081.68/8,085,608.80
  6. Step 6: Final answer
    x = 7,823,741.10

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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.