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Finding the Fourth Proportional to 49,750.70, 74,516.70 and 20,153.30

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Solution

The fourth proportional to 49,750.70, 74,516.70 and 20,153.30 is: 30,185.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,750.70 : 74,516.70 = 20,153.30 : x
  2. Step 2: Convert to fraction form
    49,750.70/74,516.70 = 20,153.30/x
  3. Step 3: Cross multiply
    49,750.70x = 74,516.70 × 20,153.30
  4. Step 4: Simplify right side
    49,750.70x = 1,501,757,410.11
  5. Step 5: Solve for x
    x = 1,501,757,410.11/49,750.70
  6. Step 6: Final answer
    x = 30,185.65

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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.