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Finding the Fourth Proportional to 84,492.10, 126,738.15 and 53,464.90

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Solution

The fourth proportional to 84,492.10, 126,738.15 and 53,464.90 is: 80,197.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,492.10 : 126,738.15 = 53,464.90 : x
  2. Step 2: Convert to fraction form
    84,492.10/126,738.15 = 53,464.90/x
  3. Step 3: Cross multiply
    84,492.10x = 126,738.15 × 53,464.90
  4. Step 4: Simplify right side
    84,492.10x = 6,776,042,515.94
  5. Step 5: Solve for x
    x = 6,776,042,515.94/84,492.10
  6. Step 6: Final answer
    x = 80,197.35

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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.