Home / 55,178.20-82,940.10-54,141.40

Finding the Fourth Proportional to 55,178.20, 82,940.10 and 54,141.40

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Solution

The fourth proportional to 55,178.20, 82,940.10 and 54,141.40 is: 81,381.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,178.20 : 82,940.10 = 54,141.40 : x
  2. Step 2: Convert to fraction form
    55,178.20/82,940.10 = 54,141.40/x
  3. Step 3: Cross multiply
    55,178.20x = 82,940.10 × 54,141.40
  4. Step 4: Simplify right side
    55,178.20x = 4,490,493,130.14
  5. Step 5: Solve for x
    x = 4,490,493,130.14/55,178.20
  6. Step 6: Final answer
    x = 81,381.65

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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.