Home / 87,918.80-121,207.44-55,637.36

Finding the Fourth Proportional to 87,918.80, 121,207.44 and 55,637.36

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Solution

The fourth proportional to 87,918.80, 121,207.44 and 55,637.36 is: 76,703.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,918.80 : 121,207.44 = 55,637.36 : x
  2. Step 2: Convert to fraction form
    87,918.80/121,207.44 = 55,637.36/x
  3. Step 3: Cross multiply
    87,918.80x = 121,207.44 × 55,637.36
  4. Step 4: Simplify right side
    87,918.80x = 6,743,661,973.96
  5. Step 5: Solve for x
    x = 6,743,661,973.96/87,918.80
  6. Step 6: Final answer
    x = 76,703.30

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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.