Home / 66,638.94-99,943.65-19,243.71

Finding the Fourth Proportional to 66,638.94, 99,943.65 and 19,243.71

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Solution

The fourth proportional to 66,638.94, 99,943.65 and 19,243.71 is: 28,861.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,638.94 : 99,943.65 = 19,243.71 : x
  2. Step 2: Convert to fraction form
    66,638.94/99,943.65 = 19,243.71/x
  3. Step 3: Cross multiply
    66,638.94x = 99,943.65 × 19,243.71
  4. Step 4: Simplify right side
    66,638.94x = 1,923,286,616.94
  5. Step 5: Solve for x
    x = 1,923,286,616.94/66,638.94
  6. Step 6: Final answer
    x = 28,861.30

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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.