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Finding the Fourth Proportional to 85,452.80, 128,140.80 and 32,844.80

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Solution

The fourth proportional to 85,452.80, 128,140.80 and 32,844.80 is: 49,252.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,452.80 : 128,140.80 = 32,844.80 : x
  2. Step 2: Convert to fraction form
    85,452.80/128,140.80 = 32,844.80/x
  3. Step 3: Cross multiply
    85,452.80x = 128,140.80 × 32,844.80
  4. Step 4: Simplify right side
    85,452.80x = 4,208,758,947.84
  5. Step 5: Solve for x
    x = 4,208,758,947.84/85,452.80
  6. Step 6: Final answer
    x = 49,252.44

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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.