Home / 81,402.44-121,956-60,107.87

Finding the Fourth Proportional to 81,402.44, 121,956 and 60,107.87

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Solution

The fourth proportional to 81,402.44, 121,956 and 60,107.87 is: 90,052.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,402.44 : 121,956 = 60,107.87 : x
  2. Step 2: Convert to fraction form
    81,402.44/121,956 = 60,107.87/x
  3. Step 3: Cross multiply
    81,402.44x = 121,956 × 60,107.87
  4. Step 4: Simplify right side
    81,402.44x = 7,330,514,783.94
  5. Step 5: Solve for x
    x = 7,330,514,783.94/81,402.44
  6. Step 6: Final answer
    x = 90,052.77

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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.