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Finding the Fourth Proportional to 39,910, 55,075.80 and 23,157.04

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Solution

The fourth proportional to 39,910, 55,075.80 and 23,157.04 is: 31,956.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,910 : 55,075.80 = 23,157.04 : x
  2. Step 2: Convert to fraction form
    39,910/55,075.80 = 23,157.04/x
  3. Step 3: Cross multiply
    39,910x = 55,075.80 × 23,157.04
  4. Step 4: Simplify right side
    39,910x = 1,275,392,503.63
  5. Step 5: Solve for x
    x = 1,275,392,503.63/39,910
  6. Step 6: Final answer
    x = 31,956.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.