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Finding the Fourth Proportional to 75,995.91, 104,879.78 and 42,003.67

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Solution

The fourth proportional to 75,995.91, 104,879.78 and 42,003.67 is: 57,968.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,995.91 : 104,879.78 = 42,003.67 : x
  2. Step 2: Convert to fraction form
    75,995.91/104,879.78 = 42,003.67/x
  3. Step 3: Cross multiply
    75,995.91x = 104,879.78 × 42,003.67
  4. Step 4: Simplify right side
    75,995.91x = 4,405,335,668.79
  5. Step 5: Solve for x
    x = 4,405,335,668.79/75,995.91
  6. Step 6: Final answer
    x = 57,968.06

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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.