Home / 78,701,218.36-118,066,958.80-30,175,287.60

Finding the Fourth Proportional to 78,701,218.36, 118,066,958.80 and 30,175,287.60

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Solution

The fourth proportional to 78,701,218.36, 118,066,958.80 and 30,175,287.60 is: 45,268,732.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,701,218.36 : 118,066,958.80 = 30,175,287.60 : x
  2. Step 2: Convert to fraction form
    78,701,218.36/118,066,958.80 = 30,175,287.60/x
  3. Step 3: Cross multiply
    78,701,218.36x = 118,066,958.80 × 30,175,287.60
  4. Step 4: Simplify right side
    78,701,218.36x = 3,562,704,437,847,351
  5. Step 5: Solve for x
    x = 3,562,704,437,847,351/78,701,218.36
  6. Step 6: Final answer
    x = 45,268,732.96

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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.