Home / 81,431.26-112,381.96-45,141.58

Finding the Fourth Proportional to 81,431.26, 112,381.96 and 45,141.58

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Solution

The fourth proportional to 81,431.26, 112,381.96 and 45,141.58 is: 62,299.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,431.26 : 112,381.96 = 45,141.58 : x
  2. Step 2: Convert to fraction form
    81,431.26/112,381.96 = 45,141.58/x
  3. Step 3: Cross multiply
    81,431.26x = 112,381.96 × 45,141.58
  4. Step 4: Simplify right side
    81,431.26x = 5,073,098,907.13
  5. Step 5: Solve for x
    x = 5,073,098,907.13/81,431.26
  6. Step 6: Final answer
    x = 62,299.16

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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.