Home / 77,987,540.75-116,795,635.16-45,128,841.39

Finding the Fourth Proportional to 77,987,540.75, 116,795,635.16 and 45,128,841.39

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Solution

The fourth proportional to 77,987,540.75, 116,795,635.16 and 45,128,841.39 is: 67,585,817.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,987,540.75 : 116,795,635.16 = 45,128,841.39 : x
  2. Step 2: Convert to fraction form
    77,987,540.75/116,795,635.16 = 45,128,841.39/x
  3. Step 3: Cross multiply
    77,987,540.75x = 116,795,635.16 × 45,128,841.39
  4. Step 4: Simplify right side
    77,987,540.75x = 5,270,851,693,954,303
  5. Step 5: Solve for x
    x = 5,270,851,693,954,303/77,987,540.75
  6. Step 6: Final answer
    x = 67,585,817.47

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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.