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Finding the Fourth Proportional to 51,651.87, 77,404.56 and 21,633.76

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Solution

The fourth proportional to 51,651.87, 77,404.56 and 21,633.76 is: 32,419.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,651.87 : 77,404.56 = 21,633.76 : x
  2. Step 2: Convert to fraction form
    51,651.87/77,404.56 = 21,633.76/x
  3. Step 3: Cross multiply
    51,651.87x = 77,404.56 × 21,633.76
  4. Step 4: Simplify right side
    51,651.87x = 1,674,551,673.95
  5. Step 5: Solve for x
    x = 1,674,551,673.95/51,651.87
  6. Step 6: Final answer
    x = 32,419.96

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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.