Home / 54,808.20-82,212.30-31,415.40

Finding the Fourth Proportional to 54,808.20, 82,212.30 and 31,415.40

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Solution

The fourth proportional to 54,808.20, 82,212.30 and 31,415.40 is: 47,123.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,808.20 : 82,212.30 = 31,415.40 : x
  2. Step 2: Convert to fraction form
    54,808.20/82,212.30 = 31,415.40/x
  3. Step 3: Cross multiply
    54,808.20x = 82,212.30 × 31,415.40
  4. Step 4: Simplify right side
    54,808.20x = 2,582,732,289.42
  5. Step 5: Solve for x
    x = 2,582,732,289.42/54,808.20
  6. Step 6: Final answer
    x = 47,123.10

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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.