Home / 80,380,842.40-120,571,263.60-76,685,687.20

Finding the Fourth Proportional to 80,380,842.40, 120,571,263.60 and 76,685,687.20

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Solution

The fourth proportional to 80,380,842.40, 120,571,263.60 and 76,685,687.20 is: 115,028,530.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,380,842.40 : 120,571,263.60 = 76,685,687.20 : x
  2. Step 2: Convert to fraction form
    80,380,842.40/120,571,263.60 = 76,685,687.20/x
  3. Step 3: Cross multiply
    80,380,842.40x = 120,571,263.60 × 76,685,687.20
  4. Step 4: Simplify right side
    80,380,842.40x = 9,246,090,205,738,346
  5. Step 5: Solve for x
    x = 9,246,090,205,738,346/80,380,842.40
  6. Step 6: Final answer
    x = 115,028,530.80

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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.