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Finding the Fourth Proportional to 80,896.95, 121,086.23 and 43,364.79

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Solution

The fourth proportional to 80,896.95, 121,086.23 and 43,364.79 is: 64,908.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,896.95 : 121,086.23 = 43,364.79 : x
  2. Step 2: Convert to fraction form
    80,896.95/121,086.23 = 43,364.79/x
  3. Step 3: Cross multiply
    80,896.95x = 121,086.23 × 43,364.79
  4. Step 4: Simplify right side
    80,896.95x = 5,250,878,719.02
  5. Step 5: Solve for x
    x = 5,250,878,719.02/80,896.95
  6. Step 6: Final answer
    x = 64,908.24

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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.