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Finding the Fourth Proportional to 75,081.60, 103,612.80 and 41,548.80

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Solution

The fourth proportional to 75,081.60, 103,612.80 and 41,548.80 is: 57,337.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,081.60 : 103,612.80 = 41,548.80 : x
  2. Step 2: Convert to fraction form
    75,081.60/103,612.80 = 41,548.80/x
  3. Step 3: Cross multiply
    75,081.60x = 103,612.80 × 41,548.80
  4. Step 4: Simplify right side
    75,081.60x = 4,304,987,504.64
  5. Step 5: Solve for x
    x = 4,304,987,504.64/75,081.60
  6. Step 6: Final answer
    x = 57,337.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.