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Finding the Fourth Proportional to 78,160.94, 107,879.79 and 44,189.07

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Solution

The fourth proportional to 78,160.94, 107,879.79 and 44,189.07 is: 60,990.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,160.94 : 107,879.79 = 44,189.07 : x
  2. Step 2: Convert to fraction form
    78,160.94/107,879.79 = 44,189.07/x
  3. Step 3: Cross multiply
    78,160.94x = 107,879.79 × 44,189.07
  4. Step 4: Simplify right side
    78,160.94x = 4,767,107,591.90
  5. Step 5: Solve for x
    x = 4,767,107,591.90/78,160.94
  6. Step 6: Final answer
    x = 60,990.92

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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.