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Finding the Fourth Proportional to 50,518.32, 69,711.48 and 28,158

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Solution

The fourth proportional to 50,518.32, 69,711.48 and 28,158 is: 38,855.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,518.32 : 69,711.48 = 28,158 : x
  2. Step 2: Convert to fraction form
    50,518.32/69,711.48 = 28,158/x
  3. Step 3: Cross multiply
    50,518.32x = 69,711.48 × 28,158
  4. Step 4: Simplify right side
    50,518.32x = 1,962,935,853.84
  5. Step 5: Solve for x
    x = 1,962,935,853.84/50,518.32
  6. Step 6: Final answer
    x = 38,855.92

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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.