Home / 87,664.72-120,977.86-47,378.38

Finding the Fourth Proportional to 87,664.72, 120,977.86 and 47,378.38

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Solution

The fourth proportional to 87,664.72, 120,977.86 and 47,378.38 is: 65,382.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,664.72 : 120,977.86 = 47,378.38 : x
  2. Step 2: Convert to fraction form
    87,664.72/120,977.86 = 47,378.38/x
  3. Step 3: Cross multiply
    87,664.72x = 120,977.86 × 47,378.38
  4. Step 4: Simplify right side
    87,664.72x = 5,731,735,022.67
  5. Step 5: Solve for x
    x = 5,731,735,022.67/87,664.72
  6. Step 6: Final answer
    x = 65,382.46

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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.