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Finding the Fourth Proportional to 81,174.56, 112,007.21 and 45,364.86

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Solution

The fourth proportional to 81,174.56, 112,007.21 and 45,364.86 is: 62,595.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,174.56 : 112,007.21 = 45,364.86 : x
  2. Step 2: Convert to fraction form
    81,174.56/112,007.21 = 45,364.86/x
  3. Step 3: Cross multiply
    81,174.56x = 112,007.21 × 45,364.86
  4. Step 4: Simplify right side
    81,174.56x = 5,081,191,173.82
  5. Step 5: Solve for x
    x = 5,081,191,173.82/81,174.56
  6. Step 6: Final answer
    x = 62,595.86

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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.