Home / 87,130.06-120,221.16-56,959.60

Finding the Fourth Proportional to 87,130.06, 120,221.16 and 56,959.60

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Solution

The fourth proportional to 87,130.06, 120,221.16 and 56,959.60 is: 78,592.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,130.06 : 120,221.16 = 56,959.60 : x
  2. Step 2: Convert to fraction form
    87,130.06/120,221.16 = 56,959.60/x
  3. Step 3: Cross multiply
    87,130.06x = 120,221.16 × 56,959.60
  4. Step 4: Simplify right side
    87,130.06x = 6,847,749,185.14
  5. Step 5: Solve for x
    x = 6,847,749,185.14/87,130.06
  6. Step 6: Final answer
    x = 78,592.27

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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.