Home / 81,904.52-122,856.64-25,749.53

Finding the Fourth Proportional to 81,904.52, 122,856.64 and 25,749.53

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Solution

The fourth proportional to 81,904.52, 122,856.64 and 25,749.53 is: 38,624.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,904.52 : 122,856.64 = 25,749.53 : x
  2. Step 2: Convert to fraction form
    81,904.52/122,856.64 = 25,749.53/x
  3. Step 3: Cross multiply
    81,904.52x = 122,856.64 × 25,749.53
  4. Step 4: Simplify right side
    81,904.52x = 3,163,500,591.86
  5. Step 5: Solve for x
    x = 3,163,500,591.86/81,904.52
  6. Step 6: Final answer
    x = 38,624.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.