Home / 78,701,220.87-118,066,962.57-30,175,290.09

Finding the Fourth Proportional to 78,701,220.87, 118,066,962.57 and 30,175,290.09

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Solution

The fourth proportional to 78,701,220.87, 118,066,962.57 and 30,175,290.09 is: 45,268,736.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,701,220.87 : 118,066,962.57 = 30,175,290.09 : x
  2. Step 2: Convert to fraction form
    78,701,220.87/118,066,962.57 = 30,175,290.09/x
  3. Step 3: Cross multiply
    78,701,220.87x = 118,066,962.57 × 30,175,290.09
  4. Step 4: Simplify right side
    78,701,220.87x = 3,562,704,845,594,921.50
  5. Step 5: Solve for x
    x = 3,562,704,845,594,921.50/78,701,220.87
  6. Step 6: Final answer
    x = 45,268,736.70

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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.