Home / 77,789.43-116,691.37-60,278.85

Finding the Fourth Proportional to 77,789.43, 116,691.37 and 60,278.85

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Solution

The fourth proportional to 77,789.43, 116,691.37 and 60,278.85 is: 90,423.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,789.43 : 116,691.37 = 60,278.85 : x
  2. Step 2: Convert to fraction form
    77,789.43/116,691.37 = 60,278.85/x
  3. Step 3: Cross multiply
    77,789.43x = 116,691.37 × 60,278.85
  4. Step 4: Simplify right side
    77,789.43x = 7,034,021,437.83
  5. Step 5: Solve for x
    x = 7,034,021,437.83/77,789.43
  6. Step 6: Final answer
    x = 90,423.87

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1.5x scale

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.