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Finding the Fourth Proportional to 69,281.70, 103,663.06 and 49,337.28

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Solution

The fourth proportional to 69,281.70, 103,663.06 and 49,337.28 is: 73,821.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,281.70 : 103,663.06 = 49,337.28 : x
  2. Step 2: Convert to fraction form
    69,281.70/103,663.06 = 49,337.28/x
  3. Step 3: Cross multiply
    69,281.70x = 103,663.06 × 49,337.28
  4. Step 4: Simplify right side
    69,281.70x = 5,114,453,416.88
  5. Step 5: Solve for x
    x = 5,114,453,416.88/69,281.70
  6. Step 6: Final answer
    x = 73,821.13

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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.