Home / 87,457.56-120,722.60-51,647.72

Finding the Fourth Proportional to 87,457.56, 120,722.60 and 51,647.72

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Solution

The fourth proportional to 87,457.56, 120,722.60 and 51,647.72 is: 71,292.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,457.56 : 120,722.60 = 51,647.72 : x
  2. Step 2: Convert to fraction form
    87,457.56/120,722.60 = 51,647.72/x
  3. Step 3: Cross multiply
    87,457.56x = 120,722.60 × 51,647.72
  4. Step 4: Simplify right side
    87,457.56x = 6,235,046,180.62
  5. Step 5: Solve for x
    x = 6,235,046,180.62/87,457.56
  6. Step 6: Final answer
    x = 71,292.25

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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.