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Finding the Fourth Proportional to 50,868.98, 70,206.39 and 28,212.98

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Solution

The fourth proportional to 50,868.98, 70,206.39 and 28,212.98 is: 38,937.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,868.98 : 70,206.39 = 28,212.98 : x
  2. Step 2: Convert to fraction form
    50,868.98/70,206.39 = 28,212.98/x
  3. Step 3: Cross multiply
    50,868.98x = 70,206.39 × 28,212.98
  4. Step 4: Simplify right side
    50,868.98x = 1,980,731,476.94
  5. Step 5: Solve for x
    x = 1,980,731,476.94/50,868.98
  6. Step 6: Final answer
    x = 38,937.90

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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.