Home / 87,415.68-120,652.75-55,578.36

Finding the Fourth Proportional to 87,415.68, 120,652.75 and 55,578.36

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Solution

The fourth proportional to 87,415.68, 120,652.75 and 55,578.36 is: 76,710.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,415.68 : 120,652.75 = 55,578.36 : x
  2. Step 2: Convert to fraction form
    87,415.68/120,652.75 = 55,578.36/x
  3. Step 3: Cross multiply
    87,415.68x = 120,652.75 × 55,578.36
  4. Step 4: Simplify right side
    87,415.68x = 6,705,681,835.54
  5. Step 5: Solve for x
    x = 6,705,681,835.54/87,415.68
  6. Step 6: Final answer
    x = 76,710.29

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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.