Home / 81,334.53-121,987.95-22,156.35

Finding the Fourth Proportional to 81,334.53, 121,987.95 and 22,156.35

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Solution

The fourth proportional to 81,334.53, 121,987.95 and 22,156.35 is: 33,230.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,334.53 : 121,987.95 = 22,156.35 : x
  2. Step 2: Convert to fraction form
    81,334.53/121,987.95 = 22,156.35/x
  3. Step 3: Cross multiply
    81,334.53x = 121,987.95 × 22,156.35
  4. Step 4: Simplify right side
    81,334.53x = 2,702,807,715.98
  5. Step 5: Solve for x
    x = 2,702,807,715.98/81,334.53
  6. Step 6: Final answer
    x = 33,230.75

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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.