Home / 81,581.24-112,580.34-47,126

Finding the Fourth Proportional to 81,581.24, 112,580.34 and 47,126

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Solution

The fourth proportional to 81,581.24, 112,580.34 and 47,126 is: 65,032.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,581.24 : 112,580.34 = 47,126 : x
  2. Step 2: Convert to fraction form
    81,581.24/112,580.34 = 47,126/x
  3. Step 3: Cross multiply
    81,581.24x = 112,580.34 × 47,126
  4. Step 4: Simplify right side
    81,581.24x = 5,305,461,102.84
  5. Step 5: Solve for x
    x = 5,305,461,102.84/81,581.24
  6. Step 6: Final answer
    x = 65,032.86

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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.