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Finding the Fourth Proportional to 50,440.65, 75,654.90 and 20,855.40

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Solution

The fourth proportional to 50,440.65, 75,654.90 and 20,855.40 is: 31,280.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,440.65 : 75,654.90 = 20,855.40 : x
  2. Step 2: Convert to fraction form
    50,440.65/75,654.90 = 20,855.40/x
  3. Step 3: Cross multiply
    50,440.65x = 75,654.90 × 20,855.40
  4. Step 4: Simplify right side
    50,440.65x = 1,577,813,201.46
  5. Step 5: Solve for x
    x = 1,577,813,201.46/50,440.65
  6. Step 6: Final answer
    x = 31,280.59

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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.