Home / 81,804,859.60-122,707,289.40-76,766,011.60

Finding the Fourth Proportional to 81,804,859.60, 122,707,289.40 and 76,766,011.60

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Solution

The fourth proportional to 81,804,859.60, 122,707,289.40 and 76,766,011.60 is: 115,149,017.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,804,859.60 : 122,707,289.40 = 76,766,011.60 : x
  2. Step 2: Convert to fraction form
    81,804,859.60/122,707,289.40 = 76,766,011.60/x
  3. Step 3: Cross multiply
    81,804,859.60x = 122,707,289.40 × 76,766,011.60
  4. Step 4: Simplify right side
    81,804,859.60x = 9,419,749,201,484,956
  5. Step 5: Solve for x
    x = 9,419,749,201,484,956/81,804,859.60
  6. Step 6: Final answer
    x = 115,149,017.40

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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.