Home / 86,921.37-119,970.03-51,131.80

Finding the Fourth Proportional to 86,921.37, 119,970.03 and 51,131.80

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Solution

The fourth proportional to 86,921.37, 119,970.03 and 51,131.80 is: 70,572.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,921.37 : 119,970.03 = 51,131.80 : x
  2. Step 2: Convert to fraction form
    86,921.37/119,970.03 = 51,131.80/x
  3. Step 3: Cross multiply
    86,921.37x = 119,970.03 × 51,131.80
  4. Step 4: Simplify right side
    86,921.37x = 6,134,283,024.37
  5. Step 5: Solve for x
    x = 6,134,283,024.37/86,921.37
  6. Step 6: Final answer
    x = 70,572.78

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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.