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Finding the Fourth Proportional to 81,627.89, 112,654.19 and 47,633.63

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Solution

The fourth proportional to 81,627.89, 112,654.19 and 47,633.63 is: 65,738.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,627.89 : 112,654.19 = 47,633.63 : x
  2. Step 2: Convert to fraction form
    81,627.89/112,654.19 = 47,633.63/x
  3. Step 3: Cross multiply
    81,627.89x = 112,654.19 × 47,633.63
  4. Step 4: Simplify right side
    81,627.89x = 5,366,127,560.22
  5. Step 5: Solve for x
    x = 5,366,127,560.22/81,627.89
  6. Step 6: Final answer
    x = 65,738.90

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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.