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Finding the Fourth Proportional to 69,287.70, 103,672.06 and 49,343.28

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Solution

The fourth proportional to 69,287.70, 103,672.06 and 49,343.28 is: 73,830.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,287.70 : 103,672.06 = 49,343.28 : x
  2. Step 2: Convert to fraction form
    69,287.70/103,672.06 = 49,343.28/x
  3. Step 3: Cross multiply
    69,287.70x = 103,672.06 × 49,343.28
  4. Step 4: Simplify right side
    69,287.70x = 5,115,519,484.76
  5. Step 5: Solve for x
    x = 5,115,519,484.76/69,287.70
  6. Step 6: Final answer
    x = 73,830.12

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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.