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Finding the Fourth Proportional to 55,277.40, 82,926.90 and 21,991.80

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Solution

The fourth proportional to 55,277.40, 82,926.90 and 21,991.80 is: 32,992.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,277.40 : 82,926.90 = 21,991.80 : x
  2. Step 2: Convert to fraction form
    55,277.40/82,926.90 = 21,991.80/x
  3. Step 3: Cross multiply
    55,277.40x = 82,926.90 × 21,991.80
  4. Step 4: Simplify right side
    55,277.40x = 1,823,711,799.42
  5. Step 5: Solve for x
    x = 1,823,711,799.42/55,277.40
  6. Step 6: Final answer
    x = 32,992.00

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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.