Home / 53,940.30-80,910.45-45,386.70

Finding the Fourth Proportional to 53,940.30, 80,910.45 and 45,386.70

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Solution

The fourth proportional to 53,940.30, 80,910.45 and 45,386.70 is: 68,080.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,940.30 : 80,910.45 = 45,386.70 : x
  2. Step 2: Convert to fraction form
    53,940.30/80,910.45 = 45,386.70/x
  3. Step 3: Cross multiply
    53,940.30x = 80,910.45 × 45,386.70
  4. Step 4: Simplify right side
    53,940.30x = 3,672,258,321.02
  5. Step 5: Solve for x
    x = 3,672,258,321.02/53,940.30
  6. Step 6: Final answer
    x = 68,080.05

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1.5x scale

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.