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Finding the Fourth Proportional to 73,961.34, 102,150.81 and 49,720.20

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Solution

The fourth proportional to 73,961.34, 102,150.81 and 49,720.20 is: 68,670.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,961.34 : 102,150.81 = 49,720.20 : x
  2. Step 2: Convert to fraction form
    73,961.34/102,150.81 = 49,720.20/x
  3. Step 3: Cross multiply
    73,961.34x = 102,150.81 × 49,720.20
  4. Step 4: Simplify right side
    73,961.34x = 5,078,958,703.36
  5. Step 5: Solve for x
    x = 5,078,958,703.36/73,961.34
  6. Step 6: Final answer
    x = 68,670.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.