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Finding the Fourth Proportional to 52,019.21, 71,786.51 and 28,145.88

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Solution

The fourth proportional to 52,019.21, 71,786.51 and 28,145.88 is: 38,841.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,019.21 : 71,786.51 = 28,145.88 : x
  2. Step 2: Convert to fraction form
    52,019.21/71,786.51 = 28,145.88/x
  3. Step 3: Cross multiply
    52,019.21x = 71,786.51 × 28,145.88
  4. Step 4: Simplify right side
    52,019.21x = 2,020,494,496.08
  5. Step 5: Solve for x
    x = 2,020,494,496.08/52,019.21
  6. Step 6: Final answer
    x = 38,841.31

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1.5x scale

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.