Home / 85,840,024.70-128,760,037.05-82,491,946.40

Finding the Fourth Proportional to 85,840,024.70, 128,760,037.05 and 82,491,946.40

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Solution

The fourth proportional to 85,840,024.70, 128,760,037.05 and 82,491,946.40 is: 123,737,919.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,840,024.70 : 128,760,037.05 = 82,491,946.40 : x
  2. Step 2: Convert to fraction form
    85,840,024.70/128,760,037.05 = 82,491,946.40/x
  3. Step 3: Cross multiply
    85,840,024.70x = 128,760,037.05 × 82,491,946.40
  4. Step 4: Simplify right side
    85,840,024.70x = 10,621,666,074,790,614
  5. Step 5: Solve for x
    x = 10,621,666,074,790,614/85,840,024.70
  6. Step 6: Final answer
    x = 123,737,919.60

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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.