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Finding the Fourth Proportional to 51,449.88, 77,213.70 and 21,888.53

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Solution

The fourth proportional to 51,449.88, 77,213.70 and 21,888.53 is: 32,849.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,449.88 : 77,213.70 = 21,888.53 : x
  2. Step 2: Convert to fraction form
    51,449.88/77,213.70 = 21,888.53/x
  3. Step 3: Cross multiply
    51,449.88x = 77,213.70 × 21,888.53
  4. Step 4: Simplify right side
    51,449.88x = 1,690,094,388.86
  5. Step 5: Solve for x
    x = 1,690,094,388.86/51,449.88
  6. Step 6: Final answer
    x = 32,849.34

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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.