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Finding the Fourth Proportional to 82,027.70, 123,041.55 and 68,905.70

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Solution

The fourth proportional to 82,027.70, 123,041.55 and 68,905.70 is: 103,358.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,027.70 : 123,041.55 = 68,905.70 : x
  2. Step 2: Convert to fraction form
    82,027.70/123,041.55 = 68,905.70/x
  3. Step 3: Cross multiply
    82,027.70x = 123,041.55 × 68,905.70
  4. Step 4: Simplify right side
    82,027.70x = 8,478,264,131.84
  5. Step 5: Solve for x
    x = 8,478,264,131.84/82,027.70
  6. Step 6: Final answer
    x = 103,358.55

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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.