Home / 86,456.48-119,321.60-50,660.78

Finding the Fourth Proportional to 86,456.48, 119,321.60 and 50,660.78

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Solution

The fourth proportional to 86,456.48, 119,321.60 and 50,660.78 is: 69,918.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,456.48 : 119,321.60 = 50,660.78 : x
  2. Step 2: Convert to fraction form
    86,456.48/119,321.60 = 50,660.78/x
  3. Step 3: Cross multiply
    86,456.48x = 119,321.60 × 50,660.78
  4. Step 4: Simplify right side
    86,456.48x = 6,044,924,476.94
  5. Step 5: Solve for x
    x = 6,044,924,476.94/86,456.48
  6. Step 6: Final answer
    x = 69,918.70

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1.5x scale

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.