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Finding the Fourth Proportional to 81,653.51, 112,680.18 and 45,843.51

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Solution

The fourth proportional to 81,653.51, 112,680.18 and 45,843.51 is: 63,263.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,653.51 : 112,680.18 = 45,843.51 : x
  2. Step 2: Convert to fraction form
    81,653.51/112,680.18 = 45,843.51/x
  3. Step 3: Cross multiply
    81,653.51x = 112,680.18 × 45,843.51
  4. Step 4: Simplify right side
    81,653.51x = 5,165,654,958.63
  5. Step 5: Solve for x
    x = 5,165,654,958.63/81,653.51
  6. Step 6: Final answer
    x = 63,263.11

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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.