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Finding the Fourth Proportional to 72,907.55, 109,361.32 and 17,503.55

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Solution

The fourth proportional to 72,907.55, 109,361.32 and 17,503.55 is: 26,255.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,907.55 : 109,361.32 = 17,503.55 : x
  2. Step 2: Convert to fraction form
    72,907.55/109,361.32 = 17,503.55/x
  3. Step 3: Cross multiply
    72,907.55x = 109,361.32 × 17,503.55
  4. Step 4: Simplify right side
    72,907.55x = 1,914,211,562.33
  5. Step 5: Solve for x
    x = 1,914,211,562.33/72,907.55
  6. Step 6: Final answer
    x = 26,255.33

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1.5x scale

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.