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Finding the Fourth Proportional to 80,347.84, 120,522.48 and 21,191.92

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Solution

The fourth proportional to 80,347.84, 120,522.48 and 21,191.92 is: 31,788.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,347.84 : 120,522.48 = 21,191.92 : x
  2. Step 2: Convert to fraction form
    80,347.84/120,522.48 = 21,191.92/x
  3. Step 3: Cross multiply
    80,347.84x = 120,522.48 × 21,191.92
  4. Step 4: Simplify right side
    80,347.84x = 2,554,102,754.36
  5. Step 5: Solve for x
    x = 2,554,102,754.36/80,347.84
  6. Step 6: Final answer
    x = 31,788.07

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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.