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Finding the Fourth Proportional to 71,075.57, 106,521.12 and 28,906.56

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Solution

The fourth proportional to 71,075.57, 106,521.12 and 28,906.56 is: 43,322.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,075.57 : 106,521.12 = 28,906.56 : x
  2. Step 2: Convert to fraction form
    71,075.57/106,521.12 = 28,906.56/x
  3. Step 3: Cross multiply
    71,075.57x = 106,521.12 × 28,906.56
  4. Step 4: Simplify right side
    71,075.57x = 3,079,159,146.55
  5. Step 5: Solve for x
    x = 3,079,159,146.55/71,075.57
  6. Step 6: Final answer
    x = 43,322.33

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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.