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Finding the Fourth Proportional to 69,126.70, 103,664.13 and 29,663.50

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Solution

The fourth proportional to 69,126.70, 103,664.13 and 29,663.50 is: 44,484.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,126.70 : 103,664.13 = 29,663.50 : x
  2. Step 2: Convert to fraction form
    69,126.70/103,664.13 = 29,663.50/x
  3. Step 3: Cross multiply
    69,126.70x = 103,664.13 × 29,663.50
  4. Step 4: Simplify right side
    69,126.70x = 3,075,040,920.26
  5. Step 5: Solve for x
    x = 3,075,040,920.26/69,126.70
  6. Step 6: Final answer
    x = 44,484.13

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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.