Home / 90,339.72-124,771.14-61,610.28

Finding the Fourth Proportional to 90,339.72, 124,771.14 and 61,610.28

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Solution

The fourth proportional to 90,339.72, 124,771.14 and 61,610.28 is: 85,091.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,339.72 : 124,771.14 = 61,610.28 : x
  2. Step 2: Convert to fraction form
    90,339.72/124,771.14 = 61,610.28/x
  3. Step 3: Cross multiply
    90,339.72x = 124,771.14 × 61,610.28
  4. Step 4: Simplify right side
    90,339.72x = 7,687,184,871.32
  5. Step 5: Solve for x
    x = 7,687,184,871.32/90,339.72
  6. Step 6: Final answer
    x = 85,091.97

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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.