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Finding the Fourth Proportional to 81,162.64, 112,004.96 and 45,354.16

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Solution

The fourth proportional to 81,162.64, 112,004.96 and 45,354.16 is: 62,589.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,162.64 : 112,004.96 = 45,354.16 : x
  2. Step 2: Convert to fraction form
    81,162.64/112,004.96 = 45,354.16/x
  3. Step 3: Cross multiply
    81,162.64x = 112,004.96 × 45,354.16
  4. Step 4: Simplify right side
    81,162.64x = 5,079,890,876.63
  5. Step 5: Solve for x
    x = 5,079,890,876.63/81,162.64
  6. Step 6: Final answer
    x = 62,589.03

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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.