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Finding the Fourth Proportional to 54,909.90, 82,364.85 and 13,356.90

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Solution

The fourth proportional to 54,909.90, 82,364.85 and 13,356.90 is: 20,035.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,909.90 : 82,364.85 = 13,356.90 : x
  2. Step 2: Convert to fraction form
    54,909.90/82,364.85 = 13,356.90/x
  3. Step 3: Cross multiply
    54,909.90x = 82,364.85 × 13,356.90
  4. Step 4: Simplify right side
    54,909.90x = 1,100,139,064.97
  5. Step 5: Solve for x
    x = 1,100,139,064.97/54,909.90
  6. Step 6: Final answer
    x = 20,035.35

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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.