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Finding the Fourth Proportional to 39,269.60, 54,860.80 and 39,269.60

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Solution

The fourth proportional to 39,269.60, 54,860.80 and 39,269.60 is: 54,860.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,269.60 : 54,860.80 = 39,269.60 : x
  2. Step 2: Convert to fraction form
    39,269.60/54,860.80 = 39,269.60/x
  3. Step 3: Cross multiply
    39,269.60x = 54,860.80 × 39,269.60
  4. Step 4: Simplify right side
    39,269.60x = 2,154,361,671.68
  5. Step 5: Solve for x
    x = 2,154,361,671.68/39,269.60
  6. Step 6: Final answer
    x = 54,860.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.