Home / 57,999.78-87,033.12-31,345.83

Finding the Fourth Proportional to 57,999.78, 87,033.12 and 31,345.83

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Solution

The fourth proportional to 57,999.78, 87,033.12 and 31,345.83 is: 47,036.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,999.78 : 87,033.12 = 31,345.83 : x
  2. Step 2: Convert to fraction form
    57,999.78/87,033.12 = 31,345.83/x
  3. Step 3: Cross multiply
    57,999.78x = 87,033.12 × 31,345.83
  4. Step 4: Simplify right side
    57,999.78x = 2,728,125,383.89
  5. Step 5: Solve for x
    x = 2,728,125,383.89/57,999.78
  6. Step 6: Final answer
    x = 47,036.82

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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.