Home / 85,407,843.69-128,085,272.70-30,813,331.79

Finding the Fourth Proportional to 85,407,843.69, 128,085,272.70 and 30,813,331.79

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Solution

The fourth proportional to 85,407,843.69, 128,085,272.70 and 30,813,331.79 is: 46,210,439.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,407,843.69 : 128,085,272.70 = 30,813,331.79 : x
  2. Step 2: Convert to fraction form
    85,407,843.69/128,085,272.70 = 30,813,331.79/x
  3. Step 3: Cross multiply
    85,407,843.69x = 128,085,272.70 × 30,813,331.79
  4. Step 4: Simplify right side
    85,407,843.69x = 3,946,734,004,477,303
  5. Step 5: Solve for x
    x = 3,946,734,004,477,303/85,407,843.69
  6. Step 6: Final answer
    x = 46,210,439.63

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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.