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Finding the Fourth Proportional to 82,029.70, 123,044.55 and 68,907.70

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Solution

The fourth proportional to 82,029.70, 123,044.55 and 68,907.70 is: 103,361.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,029.70 : 123,044.55 = 68,907.70 : x
  2. Step 2: Convert to fraction form
    82,029.70/123,044.55 = 68,907.70/x
  3. Step 3: Cross multiply
    82,029.70x = 123,044.55 × 68,907.70
  4. Step 4: Simplify right side
    82,029.70x = 8,478,716,938.04
  5. Step 5: Solve for x
    x = 8,478,716,938.04/82,029.70
  6. Step 6: Final answer
    x = 103,361.55

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1.5x scale

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.