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Finding the Fourth Proportional to 81,124.32, 111,849.60 and 62,027.52

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Solution

The fourth proportional to 81,124.32, 111,849.60 and 62,027.52 is: 85,520.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,124.32 : 111,849.60 = 62,027.52 : x
  2. Step 2: Convert to fraction form
    81,124.32/111,849.60 = 62,027.52/x
  3. Step 3: Cross multiply
    81,124.32x = 111,849.60 × 62,027.52
  4. Step 4: Simplify right side
    81,124.32x = 6,937,753,300.99
  5. Step 5: Solve for x
    x = 6,937,753,300.99/81,124.32
  6. Step 6: Final answer
    x = 85,520.02

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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.