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Finding the Fourth Proportional to 86,977.80, 130,481.10 and 37,081.80

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Solution

The fourth proportional to 86,977.80, 130,481.10 and 37,081.80 is: 55,628.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,977.80 : 130,481.10 = 37,081.80 : x
  2. Step 2: Convert to fraction form
    86,977.80/130,481.10 = 37,081.80/x
  3. Step 3: Cross multiply
    86,977.80x = 130,481.10 × 37,081.80
  4. Step 4: Simplify right side
    86,977.80x = 4,838,474,053.98
  5. Step 5: Solve for x
    x = 4,838,474,053.98/86,977.80
  6. Step 6: Final answer
    x = 55,628.84

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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.