Home / 86,651.20-119,514.63-54,789.40

Finding the Fourth Proportional to 86,651.20, 119,514.63 and 54,789.40

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Solution

The fourth proportional to 86,651.20, 119,514.63 and 54,789.40 is: 75,568.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,651.20 : 119,514.63 = 54,789.40 : x
  2. Step 2: Convert to fraction form
    86,651.20/119,514.63 = 54,789.40/x
  3. Step 3: Cross multiply
    86,651.20x = 119,514.63 × 54,789.40
  4. Step 4: Simplify right side
    86,651.20x = 6,548,134,868.92
  5. Step 5: Solve for x
    x = 6,548,134,868.92/86,651.20
  6. Step 6: Final answer
    x = 75,568.89

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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.