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Finding the Fourth Proportional to 50,389.88, 69,538.12 and 28,033.88

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Solution

The fourth proportional to 50,389.88, 69,538.12 and 28,033.88 is: 38,686.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,389.88 : 69,538.12 = 28,033.88 : x
  2. Step 2: Convert to fraction form
    50,389.88/69,538.12 = 28,033.88/x
  3. Step 3: Cross multiply
    50,389.88x = 69,538.12 × 28,033.88
  4. Step 4: Simplify right side
    50,389.88x = 1,949,423,311.51
  5. Step 5: Solve for x
    x = 1,949,423,311.51/50,389.88
  6. Step 6: Final answer
    x = 38,686.80

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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.