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Finding the Fourth Proportional to 86,995.41, 130,471.84 and 27,818.83

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Solution

The fourth proportional to 86,995.41, 130,471.84 and 27,818.83 is: 41,721.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,995.41 : 130,471.84 = 27,818.83 : x
  2. Step 2: Convert to fraction form
    86,995.41/130,471.84 = 27,818.83/x
  3. Step 3: Cross multiply
    86,995.41x = 130,471.84 × 27,818.83
  4. Step 4: Simplify right side
    86,995.41x = 3,629,573,936.75
  5. Step 5: Solve for x
    x = 3,629,573,936.75/86,995.41
  6. Step 6: Final answer
    x = 41,721.44

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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.