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Finding the Fourth Proportional to 54,408.10, 81,502.80 and 36,693.40

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Solution

The fourth proportional to 54,408.10, 81,502.80 and 36,693.40 is: 54,966.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,408.10 : 81,502.80 = 36,693.40 : x
  2. Step 2: Convert to fraction form
    54,408.10/81,502.80 = 36,693.40/x
  3. Step 3: Cross multiply
    54,408.10x = 81,502.80 × 36,693.40
  4. Step 4: Simplify right side
    54,408.10x = 2,990,614,841.52
  5. Step 5: Solve for x
    x = 2,990,614,841.52/54,408.10
  6. Step 6: Final answer
    x = 54,966.35

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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.