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Finding the Fourth Proportional to 86,983.63, 130,500.74 and 36,406.52

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Solution

The fourth proportional to 86,983.63, 130,500.74 and 36,406.52 is: 54,620.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,983.63 : 130,500.74 = 36,406.52 : x
  2. Step 2: Convert to fraction form
    86,983.63/130,500.74 = 36,406.52/x
  3. Step 3: Cross multiply
    86,983.63x = 130,500.74 × 36,406.52
  4. Step 4: Simplify right side
    86,983.63x = 4,751,077,800.82
  5. Step 5: Solve for x
    x = 4,751,077,800.82/86,983.63
  6. Step 6: Final answer
    x = 54,620.37

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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.