Home / 81,975.10-113,129.85-50,134

Finding the Fourth Proportional to 81,975.10, 113,129.85 and 50,134

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Solution

The fourth proportional to 81,975.10, 113,129.85 and 50,134 is: 69,187.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,975.10 : 113,129.85 = 50,134 : x
  2. Step 2: Convert to fraction form
    81,975.10/113,129.85 = 50,134/x
  3. Step 3: Cross multiply
    81,975.10x = 113,129.85 × 50,134
  4. Step 4: Simplify right side
    81,975.10x = 5,671,651,899.90
  5. Step 5: Solve for x
    x = 5,671,651,899.90/81,975.10
  6. Step 6: Final answer
    x = 69,187.50

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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.