Home / 74,858,906.80-112,288,360.20-66,072,415.60

Finding the Fourth Proportional to 74,858,906.80, 112,288,360.20 and 66,072,415.60

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Solution

The fourth proportional to 74,858,906.80, 112,288,360.20 and 66,072,415.60 is: 99,108,623.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,858,906.80 : 112,288,360.20 = 66,072,415.60 : x
  2. Step 2: Convert to fraction form
    74,858,906.80/112,288,360.20 = 66,072,415.60/x
  3. Step 3: Cross multiply
    74,858,906.80x = 112,288,360.20 × 66,072,415.60
  4. Step 4: Simplify right side
    74,858,906.80x = 7,419,163,202,176,899
  5. Step 5: Solve for x
    x = 7,419,163,202,176,899/74,858,906.80
  6. Step 6: Final answer
    x = 99,108,623.40

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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.