Home / 87,443.80-120,668.94-51,645.34

Finding the Fourth Proportional to 87,443.80, 120,668.94 and 51,645.34

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Solution

The fourth proportional to 87,443.80, 120,668.94 and 51,645.34 is: 71,268.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,443.80 : 120,668.94 = 51,645.34 : x
  2. Step 2: Convert to fraction form
    87,443.80/120,668.94 = 51,645.34/x
  3. Step 3: Cross multiply
    87,443.80x = 120,668.94 × 51,645.34
  4. Step 4: Simplify right side
    87,443.80x = 6,231,988,433.74
  5. Step 5: Solve for x
    x = 6,231,988,433.74/87,443.80
  6. Step 6: Final answer
    x = 71,268.50

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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.