Home / 45,086.20-67,629.30-31,089.40

Finding the Fourth Proportional to 45,086.20, 67,629.30 and 31,089.40

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Solution

The fourth proportional to 45,086.20, 67,629.30 and 31,089.40 is: 46,634.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,086.20 : 67,629.30 = 31,089.40 : x
  2. Step 2: Convert to fraction form
    45,086.20/67,629.30 = 31,089.40/x
  3. Step 3: Cross multiply
    45,086.20x = 67,629.30 × 31,089.40
  4. Step 4: Simplify right side
    45,086.20x = 2,102,554,359.42
  5. Step 5: Solve for x
    x = 2,102,554,359.42/45,086.20
  6. Step 6: Final answer
    x = 46,634.10

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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.