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Finding the Fourth Proportional to 54,990.60, 82,340.10 and 43,326.60

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Solution

The fourth proportional to 54,990.60, 82,340.10 and 43,326.60 is: 64,875.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,990.60 : 82,340.10 = 43,326.60 : x
  2. Step 2: Convert to fraction form
    54,990.60/82,340.10 = 43,326.60/x
  3. Step 3: Cross multiply
    54,990.60x = 82,340.10 × 43,326.60
  4. Step 4: Simplify right side
    54,990.60x = 3,567,516,576.66
  5. Step 5: Solve for x
    x = 3,567,516,576.66/54,990.60
  6. Step 6: Final answer
    x = 64,875.03

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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.