Home / 81,335.76-112,243.33-45,525.78

Finding the Fourth Proportional to 81,335.76, 112,243.33 and 45,525.78

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Solution

The fourth proportional to 81,335.76, 112,243.33 and 45,525.78 is: 62,825.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,335.76 : 112,243.33 = 45,525.78 : x
  2. Step 2: Convert to fraction form
    81,335.76/112,243.33 = 45,525.78/x
  3. Step 3: Cross multiply
    81,335.76x = 112,243.33 × 45,525.78
  4. Step 4: Simplify right side
    81,335.76x = 5,109,965,148.05
  5. Step 5: Solve for x
    x = 5,109,965,148.05/81,335.76
  6. Step 6: Final answer
    x = 62,825.57

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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.