Home / 39,407,485-54,382,004.64-21,525,720.20

Finding the Fourth Proportional to 39,407,485, 54,382,004.64 and 21,525,720.20

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Solution

The fourth proportional to 39,407,485, 54,382,004.64 and 21,525,720.20 is: 29,705,316.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,407,485 : 54,382,004.64 = 21,525,720.20 : x
  2. Step 2: Convert to fraction form
    39,407,485/54,382,004.64 = 21,525,720.20/x
  3. Step 3: Cross multiply
    39,407,485x = 54,382,004.64 × 21,525,720.20
  4. Step 4: Simplify right side
    39,407,485x = 1,170,611,815,795,741.75
  5. Step 5: Solve for x
    x = 1,170,611,815,795,741.75/39,407,485
  6. Step 6: Final answer
    x = 29,705,316.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.