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Finding the Fourth Proportional to 79,047.86, 109,054.86 and 48,780.44

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Solution

The fourth proportional to 79,047.86, 109,054.86 and 48,780.44 is: 67,297.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,047.86 : 109,054.86 = 48,780.44 : x
  2. Step 2: Convert to fraction form
    79,047.86/109,054.86 = 48,780.44/x
  3. Step 3: Cross multiply
    79,047.86x = 109,054.86 × 48,780.44
  4. Step 4: Simplify right side
    79,047.86x = 5,319,744,054.94
  5. Step 5: Solve for x
    x = 5,319,744,054.94/79,047.86
  6. Step 6: Final answer
    x = 67,297.76

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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.