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Finding the Fourth Proportional to 86,676, 130,018.64 and 27,516.32

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Solution

The fourth proportional to 86,676, 130,018.64 and 27,516.32 is: 41,275.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,676 : 130,018.64 = 27,516.32 : x
  2. Step 2: Convert to fraction form
    86,676/130,018.64 = 27,516.32/x
  3. Step 3: Cross multiply
    86,676x = 130,018.64 × 27,516.32
  4. Step 4: Simplify right side
    86,676x = 3,577,634,504.20
  5. Step 5: Solve for x
    x = 3,577,634,504.20/86,676
  6. Step 6: Final answer
    x = 41,275.95

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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.