Home / 78,584,564.70-117,876,847.05-40,320,812.70

Finding the Fourth Proportional to 78,584,564.70, 117,876,847.05 and 40,320,812.70

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Solution

The fourth proportional to 78,584,564.70, 117,876,847.05 and 40,320,812.70 is: 60,481,219.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,584,564.70 : 117,876,847.05 = 40,320,812.70 : x
  2. Step 2: Convert to fraction form
    78,584,564.70/117,876,847.05 = 40,320,812.70/x
  3. Step 3: Cross multiply
    78,584,564.70x = 117,876,847.05 × 40,320,812.70
  4. Step 4: Simplify right side
    78,584,564.70x = 4,752,890,271,569,598
  5. Step 5: Solve for x
    x = 4,752,890,271,569,598/78,584,564.70
  6. Step 6: Final answer
    x = 60,481,219.05

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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.