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Finding the Fourth Proportional to 54,080.90, 74,630.82 and 30,207.90

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Solution

The fourth proportional to 54,080.90, 74,630.82 and 30,207.90 is: 41,686.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,080.90 : 74,630.82 = 30,207.90 : x
  2. Step 2: Convert to fraction form
    54,080.90/74,630.82 = 30,207.90/x
  3. Step 3: Cross multiply
    54,080.90x = 74,630.82 × 30,207.90
  4. Step 4: Simplify right side
    54,080.90x = 2,254,440,347.48
  5. Step 5: Solve for x
    x = 2,254,440,347.48/54,080.90
  6. Step 6: Final answer
    x = 41,686.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.