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Finding the Fourth Proportional to 49,757,168.80, 74,668,930.80 and 28,191,728.80

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Solution

The fourth proportional to 49,757,168.80, 74,668,930.80 and 28,191,728.80 is: 42,306,391.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,757,168.80 : 74,668,930.80 = 28,191,728.80 : x
  2. Step 2: Convert to fraction form
    49,757,168.80/74,668,930.80 = 28,191,728.80/x
  3. Step 3: Cross multiply
    49,757,168.80x = 74,668,930.80 × 28,191,728.80
  4. Step 4: Simplify right side
    49,757,168.80x = 2,105,046,246,899,567
  5. Step 5: Solve for x
    x = 2,105,046,246,899,567/49,757,168.80
  6. Step 6: Final answer
    x = 42,306,391.17

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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.