Home / 115,523.15-159,420.19-64,536.61

Finding the Fourth Proportional to 115,523.15, 159,420.19 and 64,536.61

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Solution

The fourth proportional to 115,523.15, 159,420.19 and 64,536.61 is: 89,059.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,523.15 : 159,420.19 = 64,536.61 : x
  2. Step 2: Convert to fraction form
    115,523.15/159,420.19 = 64,536.61/x
  3. Step 3: Cross multiply
    115,523.15x = 159,420.19 × 64,536.61
  4. Step 4: Simplify right side
    115,523.15x = 10,288,438,628.16
  5. Step 5: Solve for x
    x = 10,288,438,628.16/115,523.15
  6. Step 6: Final answer
    x = 89,059.54

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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.