Home / 77,991.12-107,627.43-43,999.60

Finding the Fourth Proportional to 77,991.12, 107,627.43 and 43,999.60

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Solution

The fourth proportional to 77,991.12, 107,627.43 and 43,999.60 is: 60,719.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,991.12 : 107,627.43 = 43,999.60 : x
  2. Step 2: Convert to fraction form
    77,991.12/107,627.43 = 43,999.60/x
  3. Step 3: Cross multiply
    77,991.12x = 107,627.43 × 43,999.60
  4. Step 4: Simplify right side
    77,991.12x = 4,735,563,869.03
  5. Step 5: Solve for x
    x = 4,735,563,869.03/77,991.12
  6. Step 6: Final answer
    x = 60,719.27

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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.