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Finding the Fourth Proportional to 69,503.76, 104,264.46 and 18,903.84

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Solution

The fourth proportional to 69,503.76, 104,264.46 and 18,903.84 is: 28,358.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,503.76 : 104,264.46 = 18,903.84 : x
  2. Step 2: Convert to fraction form
    69,503.76/104,264.46 = 18,903.84/x
  3. Step 3: Cross multiply
    69,503.76x = 104,264.46 × 18,903.84
  4. Step 4: Simplify right side
    69,503.76x = 1,970,998,669.53
  5. Step 5: Solve for x
    x = 1,970,998,669.53/69,503.76
  6. Step 6: Final answer
    x = 28,358.16

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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.