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Finding the Fourth Proportional to 81,643.95, 112,660.88 and 45,825.75

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Solution

The fourth proportional to 81,643.95, 112,660.88 and 45,825.75 is: 63,235.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,643.95 : 112,660.88 = 45,825.75 : x
  2. Step 2: Convert to fraction form
    81,643.95/112,660.88 = 45,825.75/x
  3. Step 3: Cross multiply
    81,643.95x = 112,660.88 × 45,825.75
  4. Step 4: Simplify right side
    81,643.95x = 5,162,769,092.53
  5. Step 5: Solve for x
    x = 5,162,769,092.53/81,643.95
  6. Step 6: Final answer
    x = 63,235.17

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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.