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Finding the Fourth Proportional to 39,805.60, 59,708.40 and 25,808.80

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Solution

The fourth proportional to 39,805.60, 59,708.40 and 25,808.80 is: 38,713.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,805.60 : 59,708.40 = 25,808.80 : x
  2. Step 2: Convert to fraction form
    39,805.60/59,708.40 = 25,808.80/x
  3. Step 3: Cross multiply
    39,805.60x = 59,708.40 × 25,808.80
  4. Step 4: Simplify right side
    39,805.60x = 1,541,002,153.92
  5. Step 5: Solve for x
    x = 1,541,002,153.92/39,805.60
  6. Step 6: Final answer
    x = 38,713.20

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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.