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Finding the Fourth Proportional to 50,671.45, 69,926.25 and 28,315.45

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Solution

The fourth proportional to 50,671.45, 69,926.25 and 28,315.45 is: 39,075.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,671.45 : 69,926.25 = 28,315.45 : x
  2. Step 2: Convert to fraction form
    50,671.45/69,926.25 = 28,315.45/x
  3. Step 3: Cross multiply
    50,671.45x = 69,926.25 × 28,315.45
  4. Step 4: Simplify right side
    50,671.45x = 1,979,993,235.56
  5. Step 5: Solve for x
    x = 1,979,993,235.56/50,671.45
  6. Step 6: Final answer
    x = 39,075.12

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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.