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Finding the Fourth Proportional to 76,803.25, 115,204.88 and 18,435.25

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Solution

The fourth proportional to 76,803.25, 115,204.88 and 18,435.25 is: 27,652.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,803.25 : 115,204.88 = 18,435.25 : x
  2. Step 2: Convert to fraction form
    76,803.25/115,204.88 = 18,435.25/x
  3. Step 3: Cross multiply
    76,803.25x = 115,204.88 × 18,435.25
  4. Step 4: Simplify right side
    76,803.25x = 2,123,830,764.02
  5. Step 5: Solve for x
    x = 2,123,830,764.02/76,803.25
  6. Step 6: Final answer
    x = 27,652.88

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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.