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Finding the Fourth Proportional to 50,884.65, 70,275.74 and 39,687.21

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Solution

The fourth proportional to 50,884.65, 70,275.74 and 39,687.21 is: 54,811.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,884.65 : 70,275.74 = 39,687.21 : x
  2. Step 2: Convert to fraction form
    50,884.65/70,275.74 = 39,687.21/x
  3. Step 3: Cross multiply
    50,884.65x = 70,275.74 × 39,687.21
  4. Step 4: Simplify right side
    50,884.65x = 2,789,047,852.85
  5. Step 5: Solve for x
    x = 2,789,047,852.85/50,884.65
  6. Step 6: Final answer
    x = 54,811.18

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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.