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Finding the Fourth Proportional to 54,760.60, 82,140.90 and 13,207.60

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Solution

The fourth proportional to 54,760.60, 82,140.90 and 13,207.60 is: 19,811.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,760.60 : 82,140.90 = 13,207.60 : x
  2. Step 2: Convert to fraction form
    54,760.60/82,140.90 = 13,207.60/x
  3. Step 3: Cross multiply
    54,760.60x = 82,140.90 × 13,207.60
  4. Step 4: Simplify right side
    54,760.60x = 1,084,884,150.84
  5. Step 5: Solve for x
    x = 1,084,884,150.84/54,760.60
  6. Step 6: Final answer
    x = 19,811.40

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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.