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Finding the Fourth Proportional to 54,990.54, 82,485.60 and 13,437.54

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Solution

The fourth proportional to 54,990.54, 82,485.60 and 13,437.54 is: 20,156.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,990.54 : 82,485.60 = 13,437.54 : x
  2. Step 2: Convert to fraction form
    54,990.54/82,485.60 = 13,437.54/x
  3. Step 3: Cross multiply
    54,990.54x = 82,485.60 × 13,437.54
  4. Step 4: Simplify right side
    54,990.54x = 1,108,403,549.42
  5. Step 5: Solve for x
    x = 1,108,403,549.42/54,990.54
  6. Step 6: Final answer
    x = 20,156.26

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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.