Home / 86,939.38-130,330.83-31,496.50

Finding the Fourth Proportional to 86,939.38, 130,330.83 and 31,496.50

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Solution

The fourth proportional to 86,939.38, 130,330.83 and 31,496.50 is: 47,216.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,939.38 : 130,330.83 = 31,496.50 : x
  2. Step 2: Convert to fraction form
    86,939.38/130,330.83 = 31,496.50/x
  3. Step 3: Cross multiply
    86,939.38x = 130,330.83 × 31,496.50
  4. Step 4: Simplify right side
    86,939.38x = 4,104,964,987.10
  5. Step 5: Solve for x
    x = 4,104,964,987.10/86,939.38
  6. Step 6: Final answer
    x = 47,216.41

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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.