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Finding the Fourth Proportional to 81,713.79, 112,752.75 and 45,896.94

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Solution

The fourth proportional to 81,713.79, 112,752.75 and 45,896.94 is: 63,330.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,713.79 : 112,752.75 = 45,896.94 : x
  2. Step 2: Convert to fraction form
    81,713.79/112,752.75 = 45,896.94/x
  3. Step 3: Cross multiply
    81,713.79x = 112,752.75 × 45,896.94
  4. Step 4: Simplify right side
    81,713.79x = 5,175,006,201.59
  5. Step 5: Solve for x
    x = 5,175,006,201.59/81,713.79
  6. Step 6: Final answer
    x = 63,330.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.