Home / 81,257.64-121,901.70-36,887.52

Finding the Fourth Proportional to 81,257.64, 121,901.70 and 36,887.52

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Solution

The fourth proportional to 81,257.64, 121,901.70 and 36,887.52 is: 55,338.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,257.64 : 121,901.70 = 36,887.52 : x
  2. Step 2: Convert to fraction form
    81,257.64/121,901.70 = 36,887.52/x
  3. Step 3: Cross multiply
    81,257.64x = 121,901.70 × 36,887.52
  4. Step 4: Simplify right side
    81,257.64x = 4,496,651,396.78
  5. Step 5: Solve for x
    x = 4,496,651,396.78/81,257.64
  6. Step 6: Final answer
    x = 55,338.20

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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.