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Finding the Fourth Proportional to 51,335.34, 76,981.41 and 21,751.98

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Solution

The fourth proportional to 51,335.34, 76,981.41 and 21,751.98 is: 32,618.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,335.34 : 76,981.41 = 21,751.98 : x
  2. Step 2: Convert to fraction form
    51,335.34/76,981.41 = 21,751.98/x
  3. Step 3: Cross multiply
    51,335.34x = 76,981.41 × 21,751.98
  4. Step 4: Simplify right side
    51,335.34x = 1,674,498,090.69
  5. Step 5: Solve for x
    x = 1,674,498,090.69/51,335.34
  6. Step 6: Final answer
    x = 32,618.82

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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.