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Finding the Fourth Proportional to 86,604.72, 129,910.68 and 27,439.08

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Solution

The fourth proportional to 86,604.72, 129,910.68 and 27,439.08 is: 41,159.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,604.72 : 129,910.68 = 27,439.08 : x
  2. Step 2: Convert to fraction form
    86,604.72/129,910.68 = 27,439.08/x
  3. Step 3: Cross multiply
    86,604.72x = 129,910.68 × 27,439.08
  4. Step 4: Simplify right side
    86,604.72x = 3,564,629,541.37
  5. Step 5: Solve for x
    x = 3,564,629,541.37/86,604.72
  6. Step 6: Final answer
    x = 41,159.76

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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.