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Finding the Fourth Proportional to 81,048.96, 111,853.20 and 45,246

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Solution

The fourth proportional to 81,048.96, 111,853.20 and 45,246 is: 62,442.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,048.96 : 111,853.20 = 45,246 : x
  2. Step 2: Convert to fraction form
    81,048.96/111,853.20 = 45,246/x
  3. Step 3: Cross multiply
    81,048.96x = 111,853.20 × 45,246
  4. Step 4: Simplify right side
    81,048.96x = 5,060,909,887.20
  5. Step 5: Solve for x
    x = 5,060,909,887.20/81,048.96
  6. Step 6: Final answer
    x = 62,442.63

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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.