Home / 55,146.47-76,115.65-31,287.11

Finding the Fourth Proportional to 55,146.47, 76,115.65 and 31,287.11

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Solution

The fourth proportional to 55,146.47, 76,115.65 and 31,287.11 is: 43,183.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,146.47 : 76,115.65 = 31,287.11 : x
  2. Step 2: Convert to fraction form
    55,146.47/76,115.65 = 31,287.11/x
  3. Step 3: Cross multiply
    55,146.47x = 76,115.65 × 31,287.11
  4. Step 4: Simplify right side
    55,146.47x = 2,381,438,714.27
  5. Step 5: Solve for x
    x = 2,381,438,714.27/55,146.47
  6. Step 6: Final answer
    x = 43,183.88

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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.