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Finding the Fourth Proportional to 51,491.60, 77,238.84 and 18,206.96

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Solution

The fourth proportional to 51,491.60, 77,238.84 and 18,206.96 is: 27,310.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,491.60 : 77,238.84 = 18,206.96 : x
  2. Step 2: Convert to fraction form
    51,491.60/77,238.84 = 18,206.96/x
  3. Step 3: Cross multiply
    51,491.60x = 77,238.84 × 18,206.96
  4. Step 4: Simplify right side
    51,491.60x = 1,406,284,470.33
  5. Step 5: Solve for x
    x = 1,406,284,470.33/51,491.60
  6. Step 6: Final answer
    x = 27,310.95

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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.