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Finding the Fourth Proportional to 81,099.96, 111,929.22 and 45,292.02

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Solution

The fourth proportional to 81,099.96, 111,929.22 and 45,292.02 is: 62,509.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,099.96 : 111,929.22 = 45,292.02 : x
  2. Step 2: Convert to fraction form
    81,099.96/111,929.22 = 45,292.02/x
  3. Step 3: Cross multiply
    81,099.96x = 111,929.22 × 45,292.02
  4. Step 4: Simplify right side
    81,099.96x = 5,069,500,470.82
  5. Step 5: Solve for x
    x = 5,069,500,470.82/81,099.96
  6. Step 6: Final answer
    x = 62,509.28

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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.