Home / 81,217.74-121,862.97-51,627.90

Finding the Fourth Proportional to 81,217.74, 121,862.97 and 51,627.90

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Solution

The fourth proportional to 81,217.74, 121,862.97 and 51,627.90 is: 77,464.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,217.74 : 121,862.97 = 51,627.90 : x
  2. Step 2: Convert to fraction form
    81,217.74/121,862.97 = 51,627.90/x
  3. Step 3: Cross multiply
    81,217.74x = 121,862.97 × 51,627.90
  4. Step 4: Simplify right side
    81,217.74x = 6,291,529,228.86
  5. Step 5: Solve for x
    x = 6,291,529,228.86/81,217.74
  6. Step 6: Final answer
    x = 77,464.96

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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.