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Finding the Fourth Proportional to 82,682.76, 123,827.04 and 45,186.60

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Solution

The fourth proportional to 82,682.76, 123,827.04 and 45,186.60 is: 67,672.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,682.76 : 123,827.04 = 45,186.60 : x
  2. Step 2: Convert to fraction form
    82,682.76/123,827.04 = 45,186.60/x
  3. Step 3: Cross multiply
    82,682.76x = 123,827.04 × 45,186.60
  4. Step 4: Simplify right side
    82,682.76x = 5,595,322,925.66
  5. Step 5: Solve for x
    x = 5,595,322,925.66/82,682.76
  6. Step 6: Final answer
    x = 67,672.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.