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Finding the Fourth Proportional to 71,075.20, 106,594.20 and 21,141.84

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Solution

The fourth proportional to 71,075.20, 106,594.20 and 21,141.84 is: 31,707.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,075.20 : 106,594.20 = 21,141.84 : x
  2. Step 2: Convert to fraction form
    71,075.20/106,594.20 = 21,141.84/x
  3. Step 3: Cross multiply
    71,075.20x = 106,594.20 × 21,141.84
  4. Step 4: Simplify right side
    71,075.20x = 2,253,597,521.33
  5. Step 5: Solve for x
    x = 2,253,597,521.33/71,075.20
  6. Step 6: Final answer
    x = 31,707.23

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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.