Home / 81,945.75-113,083.28-45,646.95

Finding the Fourth Proportional to 81,945.75, 113,083.28 and 45,646.95

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Solution

The fourth proportional to 81,945.75, 113,083.28 and 45,646.95 is: 62,991.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,945.75 : 113,083.28 = 45,646.95 : x
  2. Step 2: Convert to fraction form
    81,945.75/113,083.28 = 45,646.95/x
  3. Step 3: Cross multiply
    81,945.75x = 113,083.28 × 45,646.95
  4. Step 4: Simplify right side
    81,945.75x = 5,161,906,599.76
  5. Step 5: Solve for x
    x = 5,161,906,599.76/81,945.75
  6. Step 6: Final answer
    x = 62,991.75

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1.5x scale

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.