Home / 86,997.21-120,050.47-51,180.30

Finding the Fourth Proportional to 86,997.21, 120,050.47 and 51,180.30

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Solution

The fourth proportional to 86,997.21, 120,050.47 and 51,180.30 is: 70,625.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,997.21 : 120,050.47 = 51,180.30 : x
  2. Step 2: Convert to fraction form
    86,997.21/120,050.47 = 51,180.30/x
  3. Step 3: Cross multiply
    86,997.21x = 120,050.47 × 51,180.30
  4. Step 4: Simplify right side
    86,997.21x = 6,144,218,813.84
  5. Step 5: Solve for x
    x = 6,144,218,813.84/86,997.21
  6. Step 6: Final answer
    x = 70,625.47

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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.