Home / 78,584,630.70-117,876,946.05-40,320,878.70

Finding the Fourth Proportional to 78,584,630.70, 117,876,946.05 and 40,320,878.70

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Solution

The fourth proportional to 78,584,630.70, 117,876,946.05 and 40,320,878.70 is: 60,481,318.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,584,630.70 : 117,876,946.05 = 40,320,878.70 : x
  2. Step 2: Convert to fraction form
    78,584,630.70/117,876,946.05 = 40,320,878.70/x
  3. Step 3: Cross multiply
    78,584,630.70x = 117,876,946.05 × 40,320,878.70
  4. Step 4: Simplify right side
    78,584,630.70x = 4,752,902,043,208,494
  5. Step 5: Solve for x
    x = 4,752,902,043,208,494/78,584,630.70
  6. Step 6: Final answer
    x = 60,481,318.05

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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.