Home / 84,850.20-127,275.30-43,291.80

Finding the Fourth Proportional to 84,850.20, 127,275.30 and 43,291.80

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Solution

The fourth proportional to 84,850.20, 127,275.30 and 43,291.80 is: 64,937.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,850.20 : 127,275.30 = 43,291.80 : x
  2. Step 2: Convert to fraction form
    84,850.20/127,275.30 = 43,291.80/x
  3. Step 3: Cross multiply
    84,850.20x = 127,275.30 × 43,291.80
  4. Step 4: Simplify right side
    84,850.20x = 5,509,976,832.54
  5. Step 5: Solve for x
    x = 5,509,976,832.54/84,850.20
  6. Step 6: Final answer
    x = 64,937.70

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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.