Home / 81,584,859.20-122,093,853.60-74,782,414.40

Finding the Fourth Proportional to 81,584,859.20, 122,093,853.60 and 74,782,414.40

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Solution

The fourth proportional to 81,584,859.20, 122,093,853.60 and 74,782,414.40 is: 111,913,818.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,584,859.20 : 122,093,853.60 = 74,782,414.40 : x
  2. Step 2: Convert to fraction form
    81,584,859.20/122,093,853.60 = 74,782,414.40/x
  3. Step 3: Cross multiply
    81,584,859.20x = 122,093,853.60 × 74,782,414.40
  4. Step 4: Simplify right side
    81,584,859.20x = 9,130,473,155,608,132
  5. Step 5: Solve for x
    x = 9,130,473,155,608,132/81,584,859.20
  6. Step 6: Final answer
    x = 111,913,818.88

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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.