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Finding the Fourth Proportional to 81,492.72, 122,239.16 and 22,328.88

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Solution

The fourth proportional to 81,492.72, 122,239.16 and 22,328.88 is: 33,493.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,492.72 : 122,239.16 = 22,328.88 : x
  2. Step 2: Convert to fraction form
    81,492.72/122,239.16 = 22,328.88/x
  3. Step 3: Cross multiply
    81,492.72x = 122,239.16 × 22,328.88
  4. Step 4: Simplify right side
    81,492.72x = 2,729,463,534.94
  5. Step 5: Solve for x
    x = 2,729,463,534.94/81,492.72
  6. Step 6: Final answer
    x = 33,493.34

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1.5x scale

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.