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Finding the Fourth Proportional to 49,516.80, 74,210.40 and 19,910.40

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Solution

The fourth proportional to 49,516.80, 74,210.40 and 19,910.40 is: 29,839.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,516.80 : 74,210.40 = 19,910.40 : x
  2. Step 2: Convert to fraction form
    49,516.80/74,210.40 = 19,910.40/x
  3. Step 3: Cross multiply
    49,516.80x = 74,210.40 × 19,910.40
  4. Step 4: Simplify right side
    49,516.80x = 1,477,558,748.16
  5. Step 5: Solve for x
    x = 1,477,558,748.16/49,516.80
  6. Step 6: Final answer
    x = 29,839.54

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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.