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Finding the Fourth Proportional to 38,642.60, 57,963.90 and 36,309.80

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Solution

The fourth proportional to 38,642.60, 57,963.90 and 36,309.80 is: 54,464.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,642.60 : 57,963.90 = 36,309.80 : x
  2. Step 2: Convert to fraction form
    38,642.60/57,963.90 = 36,309.80/x
  3. Step 3: Cross multiply
    38,642.60x = 57,963.90 × 36,309.80
  4. Step 4: Simplify right side
    38,642.60x = 2,104,657,616.22
  5. Step 5: Solve for x
    x = 2,104,657,616.22/38,642.60
  6. Step 6: Final answer
    x = 54,464.70

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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.