Home / 86,921.44-119,970.12-51,131.86

Finding the Fourth Proportional to 86,921.44, 119,970.12 and 51,131.86

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Solution

The fourth proportional to 86,921.44, 119,970.12 and 51,131.86 is: 70,572.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,921.44 : 119,970.12 = 51,131.86 : x
  2. Step 2: Convert to fraction form
    86,921.44/119,970.12 = 51,131.86/x
  3. Step 3: Cross multiply
    86,921.44x = 119,970.12 × 51,131.86
  4. Step 4: Simplify right side
    86,921.44x = 6,134,295,617.58
  5. Step 5: Solve for x
    x = 6,134,295,617.58/86,921.44
  6. Step 6: Final answer
    x = 70,572.88

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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.