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Finding the Fourth Proportional to 74,781.60, 112,228 and 35,350.80

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Solution

The fourth proportional to 74,781.60, 112,228 and 35,350.80 is: 53,052.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,781.60 : 112,228 = 35,350.80 : x
  2. Step 2: Convert to fraction form
    74,781.60/112,228 = 35,350.80/x
  3. Step 3: Cross multiply
    74,781.60x = 112,228 × 35,350.80
  4. Step 4: Simplify right side
    74,781.60x = 3,967,349,582.40
  5. Step 5: Solve for x
    x = 3,967,349,582.40/74,781.60
  6. Step 6: Final answer
    x = 53,052.48

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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.