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Finding the Fourth Proportional to 55,697.72, 83,563.92 and 18,258.08

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Solution

The fourth proportional to 55,697.72, 83,563.92 and 18,258.08 is: 27,392.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,697.72 : 83,563.92 = 18,258.08 : x
  2. Step 2: Convert to fraction form
    55,697.72/83,563.92 = 18,258.08/x
  3. Step 3: Cross multiply
    55,697.72x = 83,563.92 × 18,258.08
  4. Step 4: Simplify right side
    55,697.72x = 1,525,716,736.47
  5. Step 5: Solve for x
    x = 1,525,716,736.47/55,697.72
  6. Step 6: Final answer
    x = 27,392.80

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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.