Home / 87,289.36-120,453.96-51,480.88

Finding the Fourth Proportional to 87,289.36, 120,453.96 and 51,480.88

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Solution

The fourth proportional to 87,289.36, 120,453.96 and 51,480.88 is: 71,040.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,289.36 : 120,453.96 = 51,480.88 : x
  2. Step 2: Convert to fraction form
    87,289.36/120,453.96 = 51,480.88/x
  3. Step 3: Cross multiply
    87,289.36x = 120,453.96 × 51,480.88
  4. Step 4: Simplify right side
    87,289.36x = 6,201,075,860.28
  5. Step 5: Solve for x
    x = 6,201,075,860.28/87,289.36
  6. Step 6: Final answer
    x = 71,040.46

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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.