Home / 90,289.31-124,537.37-61,945.79

Finding the Fourth Proportional to 90,289.31, 124,537.37 and 61,945.79

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Solution

The fourth proportional to 90,289.31, 124,537.37 and 61,945.79 is: 85,442.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,289.31 : 124,537.37 = 61,945.79 : x
  2. Step 2: Convert to fraction form
    90,289.31/124,537.37 = 61,945.79/x
  3. Step 3: Cross multiply
    90,289.31x = 124,537.37 × 61,945.79
  4. Step 4: Simplify right side
    90,289.31x = 7,714,564,836.76
  5. Step 5: Solve for x
    x = 7,714,564,836.76/90,289.31
  6. Step 6: Final answer
    x = 85,442.73

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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.