Home / 80,885,843.60-121,328,765.40-76,740,603.80

Finding the Fourth Proportional to 80,885,843.60, 121,328,765.40 and 76,740,603.80

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Solution

The fourth proportional to 80,885,843.60, 121,328,765.40 and 76,740,603.80 is: 115,110,905.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,885,843.60 : 121,328,765.40 = 76,740,603.80 : x
  2. Step 2: Convert to fraction form
    80,885,843.60/121,328,765.40 = 76,740,603.80/x
  3. Step 3: Cross multiply
    80,885,843.60x = 121,328,765.40 × 76,740,603.80
  4. Step 4: Simplify right side
    80,885,843.60x = 9,310,842,715,104,548
  5. Step 5: Solve for x
    x = 9,310,842,715,104,548/80,885,843.60
  6. Step 6: Final answer
    x = 115,110,905.70

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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.