Home / 85,834.80-128,752.20-43,844.40

Finding the Fourth Proportional to 85,834.80, 128,752.20 and 43,844.40

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Solution

The fourth proportional to 85,834.80, 128,752.20 and 43,844.40 is: 65,766.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,834.80 : 128,752.20 = 43,844.40 : x
  2. Step 2: Convert to fraction form
    85,834.80/128,752.20 = 43,844.40/x
  3. Step 3: Cross multiply
    85,834.80x = 128,752.20 × 43,844.40
  4. Step 4: Simplify right side
    85,834.80x = 5,645,062,957.68
  5. Step 5: Solve for x
    x = 5,645,062,957.68/85,834.80
  6. Step 6: Final answer
    x = 65,766.60

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Similar ratio
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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.