Home / 55,279.16-76,287.30-31,409.88

Finding the Fourth Proportional to 55,279.16, 76,287.30 and 31,409.88

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Solution

The fourth proportional to 55,279.16, 76,287.30 and 31,409.88 is: 43,346.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,279.16 : 76,287.30 = 31,409.88 : x
  2. Step 2: Convert to fraction form
    55,279.16/76,287.30 = 31,409.88/x
  3. Step 3: Cross multiply
    55,279.16x = 76,287.30 × 31,409.88
  4. Step 4: Simplify right side
    55,279.16x = 2,396,174,938.52
  5. Step 5: Solve for x
    x = 2,396,174,938.52/55,279.16
  6. Step 6: Final answer
    x = 43,346.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.