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Finding the Fourth Proportional to 51,886.40, 77,839.20 and 16,827.20

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Solution

The fourth proportional to 51,886.40, 77,839.20 and 16,827.20 is: 25,243.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,886.40 : 77,839.20 = 16,827.20 : x
  2. Step 2: Convert to fraction form
    51,886.40/77,839.20 = 16,827.20/x
  3. Step 3: Cross multiply
    51,886.40x = 77,839.20 × 16,827.20
  4. Step 4: Simplify right side
    51,886.40x = 1,309,815,786.24
  5. Step 5: Solve for x
    x = 1,309,815,786.24/51,886.40
  6. Step 6: Final answer
    x = 25,243.91

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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.