Home / 87,682.20-121,002-47,395.92

Finding the Fourth Proportional to 87,682.20, 121,002 and 47,395.92

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Solution

The fourth proportional to 87,682.20, 121,002 and 47,395.92 is: 65,406.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,682.20 : 121,002 = 47,395.92 : x
  2. Step 2: Convert to fraction form
    87,682.20/121,002 = 47,395.92/x
  3. Step 3: Cross multiply
    87,682.20x = 121,002 × 47,395.92
  4. Step 4: Simplify right side
    87,682.20x = 5,735,001,111.84
  5. Step 5: Solve for x
    x = 5,735,001,111.84/87,682.20
  6. Step 6: Final answer
    x = 65,406.67

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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.