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Finding the Fourth Proportional to 69,504.50, 104,275.95 and 20,256.50

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Solution

The fourth proportional to 69,504.50, 104,275.95 and 20,256.50 is: 30,390.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,504.50 : 104,275.95 = 20,256.50 : x
  2. Step 2: Convert to fraction form
    69,504.50/104,275.95 = 20,256.50/x
  3. Step 3: Cross multiply
    69,504.50x = 104,275.95 × 20,256.50
  4. Step 4: Simplify right side
    69,504.50x = 2,112,265,781.18
  5. Step 5: Solve for x
    x = 2,112,265,781.18/69,504.50
  6. Step 6: Final answer
    x = 30,390.35

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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.