Home / 81,431.34-112,372.54-45,131.24

Finding the Fourth Proportional to 81,431.34, 112,372.54 and 45,131.24

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Solution

The fourth proportional to 81,431.34, 112,372.54 and 45,131.24 is: 62,279.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,431.34 : 112,372.54 = 45,131.24 : x
  2. Step 2: Convert to fraction form
    81,431.34/112,372.54 = 45,131.24/x
  3. Step 3: Cross multiply
    81,431.34x = 112,372.54 × 45,131.24
  4. Step 4: Simplify right side
    81,431.34x = 5,071,512,240.25
  5. Step 5: Solve for x
    x = 5,071,512,240.25/81,431.34
  6. Step 6: Final answer
    x = 62,279.61

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1.5x scale

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.