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Finding the Fourth Proportional to 80,526.84, 120,776.49 and 21,368.49

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Solution

The fourth proportional to 80,526.84, 120,776.49 and 21,368.49 is: 32,049.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,526.84 : 120,776.49 = 21,368.49 : x
  2. Step 2: Convert to fraction form
    80,526.84/120,776.49 = 21,368.49/x
  3. Step 3: Cross multiply
    80,526.84x = 120,776.49 × 21,368.49
  4. Step 4: Simplify right side
    80,526.84x = 2,580,811,218.80
  5. Step 5: Solve for x
    x = 2,580,811,218.80/80,526.84
  6. Step 6: Final answer
    x = 32,049.08

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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.