Home / 72,066,376.80-108,089,067.60-20,943,064.80

Finding the Fourth Proportional to 72,066,376.80, 108,089,067.60 and 20,943,064.80

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Solution

The fourth proportional to 72,066,376.80, 108,089,067.60 and 20,943,064.80 is: 31,411,546.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,066,376.80 : 108,089,067.60 = 20,943,064.80 : x
  2. Step 2: Convert to fraction form
    72,066,376.80/108,089,067.60 = 20,943,064.80/x
  3. Step 3: Cross multiply
    72,066,376.80x = 108,089,067.60 × 20,943,064.80
  4. Step 4: Simplify right side
    72,066,376.80x = 2,263,716,346,918,380.50
  5. Step 5: Solve for x
    x = 2,263,716,346,918,380.50/72,066,376.80
  6. Step 6: Final answer
    x = 31,411,546.51

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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.