Home / 86,731.91-130,009.24-49,212.72

Finding the Fourth Proportional to 86,731.91, 130,009.24 and 49,212.72

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Solution

The fourth proportional to 86,731.91, 130,009.24 and 49,212.72 is: 73,768.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,731.91 : 130,009.24 = 49,212.72 : x
  2. Step 2: Convert to fraction form
    86,731.91/130,009.24 = 49,212.72/x
  3. Step 3: Cross multiply
    86,731.91x = 130,009.24 × 49,212.72
  4. Step 4: Simplify right side
    86,731.91x = 6,398,108,202.50
  5. Step 5: Solve for x
    x = 6,398,108,202.50/86,731.91
  6. Step 6: Final answer
    x = 73,768.80

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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.