Home / 87,450.80-120,678.63-51,652.31

Finding the Fourth Proportional to 87,450.80, 120,678.63 and 51,652.31

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Solution

The fourth proportional to 87,450.80, 120,678.63 and 51,652.31 is: 71,278.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,450.80 : 120,678.63 = 51,652.31 : x
  2. Step 2: Convert to fraction form
    87,450.80/120,678.63 = 51,652.31/x
  3. Step 3: Cross multiply
    87,450.80x = 120,678.63 × 51,652.31
  4. Step 4: Simplify right side
    87,450.80x = 6,233,330,007.14
  5. Step 5: Solve for x
    x = 6,233,330,007.14/87,450.80
  6. Step 6: Final answer
    x = 71,278.14

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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.