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Finding the Fourth Proportional to 76,553.66, 114,832.65 and 21,149.66

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Solution

The fourth proportional to 76,553.66, 114,832.65 and 21,149.66 is: 31,725.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,553.66 : 114,832.65 = 21,149.66 : x
  2. Step 2: Convert to fraction form
    76,553.66/114,832.65 = 21,149.66/x
  3. Step 3: Cross multiply
    76,553.66x = 114,832.65 × 21,149.66
  4. Step 4: Simplify right side
    76,553.66x = 2,428,671,504.40
  5. Step 5: Solve for x
    x = 2,428,671,504.40/76,553.66
  6. Step 6: Final answer
    x = 31,725.09

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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.