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Finding the Fourth Proportional to 85,682.56, 118,243.84 and 47,960.96

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Solution

The fourth proportional to 85,682.56, 118,243.84 and 47,960.96 is: 66,187.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,682.56 : 118,243.84 = 47,960.96 : x
  2. Step 2: Convert to fraction form
    85,682.56/118,243.84 = 47,960.96/x
  3. Step 3: Cross multiply
    85,682.56x = 118,243.84 × 47,960.96
  4. Step 4: Simplify right side
    85,682.56x = 5,671,088,080.49
  5. Step 5: Solve for x
    x = 5,671,088,080.49/85,682.56
  6. Step 6: Final answer
    x = 66,187.19

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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.