Home / 85,323.20-127,821.60-45,867.20

Finding the Fourth Proportional to 85,323.20, 127,821.60 and 45,867.20

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Solution

The fourth proportional to 85,323.20, 127,821.60 and 45,867.20 is: 68,713.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,323.20 : 127,821.60 = 45,867.20 : x
  2. Step 2: Convert to fraction form
    85,323.20/127,821.60 = 45,867.20/x
  3. Step 3: Cross multiply
    85,323.20x = 127,821.60 × 45,867.20
  4. Step 4: Simplify right side
    85,323.20x = 5,862,818,891.52
  5. Step 5: Solve for x
    x = 5,862,818,891.52/85,323.20
  6. Step 6: Final answer
    x = 68,713.07

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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.