Home / 45,315.42-67,935.69-19,996.90

Finding the Fourth Proportional to 45,315.42, 67,935.69 and 19,996.90

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Solution

The fourth proportional to 45,315.42, 67,935.69 and 19,996.90 is: 29,978.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,315.42 : 67,935.69 = 19,996.90 : x
  2. Step 2: Convert to fraction form
    45,315.42/67,935.69 = 19,996.90/x
  3. Step 3: Cross multiply
    45,315.42x = 67,935.69 × 19,996.90
  4. Step 4: Simplify right side
    45,315.42x = 1,358,503,199.36
  5. Step 5: Solve for x
    x = 1,358,503,199.36/45,315.42
  6. Step 6: Final answer
    x = 29,978.83

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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.