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Finding the Fourth Proportional to 72,218.66, 108,339.66 and 22,287.08

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Solution

The fourth proportional to 72,218.66, 108,339.66 and 22,287.08 is: 33,434.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,218.66 : 108,339.66 = 22,287.08 : x
  2. Step 2: Convert to fraction form
    72,218.66/108,339.66 = 22,287.08/x
  3. Step 3: Cross multiply
    72,218.66x = 108,339.66 × 22,287.08
  4. Step 4: Simplify right side
    72,218.66x = 2,414,574,940.44
  5. Step 5: Solve for x
    x = 2,414,574,940.44/72,218.66
  6. Step 6: Final answer
    x = 33,434.23

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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.