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Finding the Fourth Proportional to 81,171.81, 112,012.94 and 45,354.83

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Solution

The fourth proportional to 81,171.81, 112,012.94 and 45,354.83 is: 62,587.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,171.81 : 112,012.94 = 45,354.83 : x
  2. Step 2: Convert to fraction form
    81,171.81/112,012.94 = 45,354.83/x
  3. Step 3: Cross multiply
    81,171.81x = 112,012.94 × 45,354.83
  4. Step 4: Simplify right side
    81,171.81x = 5,080,327,404.82
  5. Step 5: Solve for x
    x = 5,080,327,404.82/81,171.81
  6. Step 6: Final answer
    x = 62,587.34

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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.