Home / 81,505.08-112,481.64-45,706.56

Finding the Fourth Proportional to 81,505.08, 112,481.64 and 45,706.56

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Solution

The fourth proportional to 81,505.08, 112,481.64 and 45,706.56 is: 63,077.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,505.08 : 112,481.64 = 45,706.56 : x
  2. Step 2: Convert to fraction form
    81,505.08/112,481.64 = 45,706.56/x
  3. Step 3: Cross multiply
    81,505.08x = 112,481.64 × 45,706.56
  4. Step 4: Simplify right side
    81,505.08x = 5,141,148,827.56
  5. Step 5: Solve for x
    x = 5,141,148,827.56/81,505.08
  6. Step 6: Final answer
    x = 63,077.65

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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.