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Finding the Fourth Proportional to 72,786.80, 100,447.08 and 44,508.08

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Solution

The fourth proportional to 72,786.80, 100,447.08 and 44,508.08 is: 61,421.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,786.80 : 100,447.08 = 44,508.08 : x
  2. Step 2: Convert to fraction form
    72,786.80/100,447.08 = 44,508.08/x
  3. Step 3: Cross multiply
    72,786.80x = 100,447.08 × 44,508.08
  4. Step 4: Simplify right side
    72,786.80x = 4,470,706,672.41
  5. Step 5: Solve for x
    x = 4,470,706,672.41/72,786.80
  6. Step 6: Final answer
    x = 61,421.94

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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.