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Finding the Fourth Proportional to 39,752.80, 59,629.20 and 37,128.40

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Solution

The fourth proportional to 39,752.80, 59,629.20 and 37,128.40 is: 55,692.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,752.80 : 59,629.20 = 37,128.40 : x
  2. Step 2: Convert to fraction form
    39,752.80/59,629.20 = 37,128.40/x
  3. Step 3: Cross multiply
    39,752.80x = 59,629.20 × 37,128.40
  4. Step 4: Simplify right side
    39,752.80x = 2,213,936,789.28
  5. Step 5: Solve for x
    x = 2,213,936,789.28/39,752.80
  6. Step 6: Final answer
    x = 55,692.60

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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.