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Finding the Fourth Proportional to 77,960.96, 107,586.12 and 42,150.96

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Solution

The fourth proportional to 77,960.96, 107,586.12 and 42,150.96 is: 58,168.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,960.96 : 107,586.12 = 42,150.96 : x
  2. Step 2: Convert to fraction form
    77,960.96/107,586.12 = 42,150.96/x
  3. Step 3: Cross multiply
    77,960.96x = 107,586.12 × 42,150.96
  4. Step 4: Simplify right side
    77,960.96x = 4,534,858,240.68
  5. Step 5: Solve for x
    x = 4,534,858,240.68/77,960.96
  6. Step 6: Final answer
    x = 58,168.32

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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.