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Finding the Fourth Proportional to 79,357.82, 109,483.92 and 50,678.55

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Solution

The fourth proportional to 79,357.82, 109,483.92 and 50,678.55 is: 69,917.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,357.82 : 109,483.92 = 50,678.55 : x
  2. Step 2: Convert to fraction form
    79,357.82/109,483.92 = 50,678.55/x
  3. Step 3: Cross multiply
    79,357.82x = 109,483.92 × 50,678.55
  4. Step 4: Simplify right side
    79,357.82x = 5,548,486,313.92
  5. Step 5: Solve for x
    x = 5,548,486,313.92/79,357.82
  6. Step 6: Final answer
    x = 69,917.33

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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.