Home / 55,153.80-82,690.20-21,857.40

Finding the Fourth Proportional to 55,153.80, 82,690.20 and 21,857.40

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Solution

The fourth proportional to 55,153.80, 82,690.20 and 21,857.40 is: 32,770.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,153.80 : 82,690.20 = 21,857.40 : x
  2. Step 2: Convert to fraction form
    55,153.80/82,690.20 = 21,857.40/x
  3. Step 3: Cross multiply
    55,153.80x = 82,690.20 × 21,857.40
  4. Step 4: Simplify right side
    55,153.80x = 1,807,392,777.48
  5. Step 5: Solve for x
    x = 1,807,392,777.48/55,153.80
  6. Step 6: Final answer
    x = 32,770.05

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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.