Home / 8,085,361.80-12,128,042.70-5,380,917.60

Finding the Fourth Proportional to 8,085,361.80, 12,128,042.70 and 5,380,917.60

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Solution

The fourth proportional to 8,085,361.80, 12,128,042.70 and 5,380,917.60 is: 8,071,376.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,085,361.80 : 12,128,042.70 = 5,380,917.60 : x
  2. Step 2: Convert to fraction form
    8,085,361.80/12,128,042.70 = 5,380,917.60/x
  3. Step 3: Cross multiply
    8,085,361.80x = 12,128,042.70 × 5,380,917.60
  4. Step 4: Simplify right side
    8,085,361.80x = 65,259,998,417,981.51
  5. Step 5: Solve for x
    x = 65,259,998,417,981.51/8,085,361.80
  6. Step 6: Final answer
    x = 8,071,376.40

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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.