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Finding the Fourth Proportional to 72,283.91, 108,425.81 and 30,183.81

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Solution

The fourth proportional to 72,283.91, 108,425.81 and 30,183.81 is: 45,275.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,283.91 : 108,425.81 = 30,183.81 : x
  2. Step 2: Convert to fraction form
    72,283.91/108,425.81 = 30,183.81/x
  3. Step 3: Cross multiply
    72,283.91x = 108,425.81 × 30,183.81
  4. Step 4: Simplify right side
    72,283.91x = 3,272,703,897.22
  5. Step 5: Solve for x
    x = 3,272,703,897.22/72,283.91
  6. Step 6: Final answer
    x = 45,275.69

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1.5x scale

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.