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Finding the Fourth Proportional to 72,578.72, 100,169.64 and 44,300.84

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Solution

The fourth proportional to 72,578.72, 100,169.64 and 44,300.84 is: 61,141.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,578.72 : 100,169.64 = 44,300.84 : x
  2. Step 2: Convert to fraction form
    72,578.72/100,169.64 = 44,300.84/x
  3. Step 3: Cross multiply
    72,578.72x = 100,169.64 × 44,300.84
  4. Step 4: Simplify right side
    72,578.72x = 4,437,599,194.50
  5. Step 5: Solve for x
    x = 4,437,599,194.50/72,578.72
  6. Step 6: Final answer
    x = 61,141.88

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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.