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Finding the Fourth Proportional to 70,585.99, 105,879.11 and 30,049.04

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Solution

The fourth proportional to 70,585.99, 105,879.11 and 30,049.04 is: 45,073.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,585.99 : 105,879.11 = 30,049.04 : x
  2. Step 2: Convert to fraction form
    70,585.99/105,879.11 = 30,049.04/x
  3. Step 3: Cross multiply
    70,585.99x = 105,879.11 × 30,049.04
  4. Step 4: Simplify right side
    70,585.99x = 3,181,565,300.46
  5. Step 5: Solve for x
    x = 3,181,565,300.46/70,585.99
  6. Step 6: Final answer
    x = 45,073.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.