Home / 65,704.10-90,678.78-40,227.62

Finding the Fourth Proportional to 65,704.10, 90,678.78 and 40,227.62

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Solution

The fourth proportional to 65,704.10, 90,678.78 and 40,227.62 is: 55,518.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,704.10 : 90,678.78 = 40,227.62 : x
  2. Step 2: Convert to fraction form
    65,704.10/90,678.78 = 40,227.62/x
  3. Step 3: Cross multiply
    65,704.10x = 90,678.78 × 40,227.62
  4. Step 4: Simplify right side
    65,704.10x = 3,647,791,050.51
  5. Step 5: Solve for x
    x = 3,647,791,050.51/65,704.10
  6. Step 6: Final answer
    x = 55,518.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.