Home / 85,840,108.70-128,760,163.05-82,492,030.40

Finding the Fourth Proportional to 85,840,108.70, 128,760,163.05 and 82,492,030.40

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Solution

The fourth proportional to 85,840,108.70, 128,760,163.05 and 82,492,030.40 is: 123,738,045.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,840,108.70 : 128,760,163.05 = 82,492,030.40 : x
  2. Step 2: Convert to fraction form
    85,840,108.70/128,760,163.05 = 82,492,030.40/x
  3. Step 3: Cross multiply
    85,840,108.70x = 128,760,163.05 × 82,492,030.40
  4. Step 4: Simplify right side
    85,840,108.70x = 10,621,687,284,629,558
  5. Step 5: Solve for x
    x = 10,621,687,284,629,558/85,840,108.70
  6. Step 6: Final answer
    x = 123,738,045.60

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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.