Home / 78,584,628.70-117,876,943.05-40,320,876.70

Finding the Fourth Proportional to 78,584,628.70, 117,876,943.05 and 40,320,876.70

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Solution

The fourth proportional to 78,584,628.70, 117,876,943.05 and 40,320,876.70 is: 60,481,315.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,584,628.70 : 117,876,943.05 = 40,320,876.70 : x
  2. Step 2: Convert to fraction form
    78,584,628.70/117,876,943.05 = 40,320,876.70/x
  3. Step 3: Cross multiply
    78,584,628.70x = 117,876,943.05 × 40,320,876.70
  4. Step 4: Simplify right side
    78,584,628.70x = 4,752,901,686,491,972
  5. Step 5: Solve for x
    x = 4,752,901,686,491,972/78,584,628.70
  6. Step 6: Final answer
    x = 60,481,315.05

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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.