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Finding the Fourth Proportional to 69,526.50, 104,292.99 and 20,278.50

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Solution

The fourth proportional to 69,526.50, 104,292.99 and 20,278.50 is: 30,418.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,526.50 : 104,292.99 = 20,278.50 : x
  2. Step 2: Convert to fraction form
    69,526.50/104,292.99 = 20,278.50/x
  3. Step 3: Cross multiply
    69,526.50x = 104,292.99 × 20,278.50
  4. Step 4: Simplify right side
    69,526.50x = 2,114,905,397.72
  5. Step 5: Solve for x
    x = 2,114,905,397.72/69,526.50
  6. Step 6: Final answer
    x = 30,418.69

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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.