Home / 76,678.86-114,913.26-57,943.56

Finding the Fourth Proportional to 76,678.86, 114,913.26 and 57,943.56

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Solution

The fourth proportional to 76,678.86, 114,913.26 and 57,943.56 is: 86,835.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,678.86 : 114,913.26 = 57,943.56 : x
  2. Step 2: Convert to fraction form
    76,678.86/114,913.26 = 57,943.56/x
  3. Step 3: Cross multiply
    76,678.86x = 114,913.26 × 57,943.56
  4. Step 4: Simplify right side
    76,678.86x = 6,658,483,375.61
  5. Step 5: Solve for x
    x = 6,658,483,375.61/76,678.86
  6. Step 6: Final answer
    x = 86,835.97

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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.