Home / 81,648,010.40-122,472,015.60-49,399,383.20

Finding the Fourth Proportional to 81,648,010.40, 122,472,015.60 and 49,399,383.20

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Solution

The fourth proportional to 81,648,010.40, 122,472,015.60 and 49,399,383.20 is: 74,099,074.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,648,010.40 : 122,472,015.60 = 49,399,383.20 : x
  2. Step 2: Convert to fraction form
    81,648,010.40/122,472,015.60 = 49,399,383.20/x
  3. Step 3: Cross multiply
    81,648,010.40x = 122,472,015.60 × 49,399,383.20
  4. Step 4: Simplify right side
    81,648,010.40x = 6,050,042,029,900,778
  5. Step 5: Solve for x
    x = 6,050,042,029,900,778/81,648,010.40
  6. Step 6: Final answer
    x = 74,099,074.80

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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.