Home / 81,584,779.20-122,093,733.60-74,782,334.40

Finding the Fourth Proportional to 81,584,779.20, 122,093,733.60 and 74,782,334.40

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Solution

The fourth proportional to 81,584,779.20, 122,093,733.60 and 74,782,334.40 is: 111,913,698.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,584,779.20 : 122,093,733.60 = 74,782,334.40 : x
  2. Step 2: Convert to fraction form
    81,584,779.20/122,093,733.60 = 74,782,334.40/x
  3. Step 3: Cross multiply
    81,584,779.20x = 122,093,733.60 × 74,782,334.40
  4. Step 4: Simplify right side
    81,584,779.20x = 9,130,454,414,219,716
  5. Step 5: Solve for x
    x = 9,130,454,414,219,716/81,584,779.20
  6. Step 6: Final answer
    x = 111,913,698.90

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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.