Home / 57,021,782.12-85,541,208.77-20,638,685.01

Finding the Fourth Proportional to 57,021,782.12, 85,541,208.77 and 20,638,685.01

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Solution

The fourth proportional to 57,021,782.12, 85,541,208.77 and 20,638,685.01 is: 30,961,116.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,021,782.12 : 85,541,208.77 = 20,638,685.01 : x
  2. Step 2: Convert to fraction form
    57,021,782.12/85,541,208.77 = 20,638,685.01/x
  3. Step 3: Cross multiply
    57,021,782.12x = 85,541,208.77 × 20,638,685.01
  4. Step 4: Simplify right side
    57,021,782.12x = 1,765,458,063,551,055.75
  5. Step 5: Solve for x
    x = 1,765,458,063,551,055.75/57,021,782.12
  6. Step 6: Final answer
    x = 30,961,116.93

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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.