Home / 81,887,660.10-122,831,490.15-38,840,939.10

Finding the Fourth Proportional to 81,887,660.10, 122,831,490.15 and 38,840,939.10

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Solution

The fourth proportional to 81,887,660.10, 122,831,490.15 and 38,840,939.10 is: 58,261,408.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,887,660.10 : 122,831,490.15 = 38,840,939.10 : x
  2. Step 2: Convert to fraction form
    81,887,660.10/122,831,490.15 = 38,840,939.10/x
  3. Step 3: Cross multiply
    81,887,660.10x = 122,831,490.15 × 38,840,939.10
  4. Step 4: Simplify right side
    81,887,660.10x = 4,770,890,428,478,400
  5. Step 5: Solve for x
    x = 4,770,890,428,478,400/81,887,660.10
  6. Step 6: Final answer
    x = 58,261,408.65

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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.