Home / 81,887,712.60-122,831,568.90-38,840,991.60

Finding the Fourth Proportional to 81,887,712.60, 122,831,568.90 and 38,840,991.60

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Solution

The fourth proportional to 81,887,712.60, 122,831,568.90 and 38,840,991.60 is: 58,261,487.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,887,712.60 : 122,831,568.90 = 38,840,991.60 : x
  2. Step 2: Convert to fraction form
    81,887,712.60/122,831,568.90 = 38,840,991.60/x
  3. Step 3: Cross multiply
    81,887,712.60x = 122,831,568.90 × 38,840,991.60
  4. Step 4: Simplify right side
    81,887,712.60x = 4,770,899,935,859,722
  5. Step 5: Solve for x
    x = 4,770,899,935,859,722/81,887,712.60
  6. Step 6: Final answer
    x = 58,261,487.40

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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.