Home / 72,836,107.80-109,254,161.70-66,883,968.60

Finding the Fourth Proportional to 72,836,107.80, 109,254,161.70 and 66,883,968.60

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Solution

The fourth proportional to 72,836,107.80, 109,254,161.70 and 66,883,968.60 is: 100,325,952.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,836,107.80 : 109,254,161.70 = 66,883,968.60 : x
  2. Step 2: Convert to fraction form
    72,836,107.80/109,254,161.70 = 66,883,968.60/x
  3. Step 3: Cross multiply
    72,836,107.80x = 109,254,161.70 × 66,883,968.60
  4. Step 4: Simplify right side
    72,836,107.80x = 7,307,351,920,562,123
  5. Step 5: Solve for x
    x = 7,307,351,920,562,123/72,836,107.80
  6. Step 6: Final answer
    x = 100,325,952.90

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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.