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Finding the Fourth Proportional to 72,182.64, 108,292.39 and 30,048.71

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Solution

The fourth proportional to 72,182.64, 108,292.39 and 30,048.71 is: 45,080.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,182.64 : 108,292.39 = 30,048.71 : x
  2. Step 2: Convert to fraction form
    72,182.64/108,292.39 = 30,048.71/x
  3. Step 3: Cross multiply
    72,182.64x = 108,292.39 × 30,048.71
  4. Step 4: Simplify right side
    72,182.64x = 3,254,046,472.07
  5. Step 5: Solve for x
    x = 3,254,046,472.07/72,182.64
  6. Step 6: Final answer
    x = 45,080.74

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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.