Home / 87,672.14-120,985.14-49,431.36

Finding the Fourth Proportional to 87,672.14, 120,985.14 and 49,431.36

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Solution

The fourth proportional to 87,672.14, 120,985.14 and 49,431.36 is: 68,213.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,672.14 : 120,985.14 = 49,431.36 : x
  2. Step 2: Convert to fraction form
    87,672.14/120,985.14 = 49,431.36/x
  3. Step 3: Cross multiply
    87,672.14x = 120,985.14 × 49,431.36
  4. Step 4: Simplify right side
    87,672.14x = 5,980,460,649.05
  5. Step 5: Solve for x
    x = 5,980,460,649.05/87,672.14
  6. Step 6: Final answer
    x = 68,213.92

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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.