Home / 82,427,105.80-123,640,658.70-74,490,920.20

Finding the Fourth Proportional to 82,427,105.80, 123,640,658.70 and 74,490,920.20

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Solution

The fourth proportional to 82,427,105.80, 123,640,658.70 and 74,490,920.20 is: 111,736,380.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,427,105.80 : 123,640,658.70 = 74,490,920.20 : x
  2. Step 2: Convert to fraction form
    82,427,105.80/123,640,658.70 = 74,490,920.20/x
  3. Step 3: Cross multiply
    82,427,105.80x = 123,640,658.70 × 74,490,920.20
  4. Step 4: Simplify right side
    82,427,105.80x = 9,210,106,440,697,136
  5. Step 5: Solve for x
    x = 9,210,106,440,697,136/82,427,105.80
  6. Step 6: Final answer
    x = 111,736,380.30

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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.