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Finding the Fourth Proportional to 40,615.20, 60,922.80 and 35,431.20

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Solution

The fourth proportional to 40,615.20, 60,922.80 and 35,431.20 is: 53,146.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,615.20 : 60,922.80 = 35,431.20 : x
  2. Step 2: Convert to fraction form
    40,615.20/60,922.80 = 35,431.20/x
  3. Step 3: Cross multiply
    40,615.20x = 60,922.80 × 35,431.20
  4. Step 4: Simplify right side
    40,615.20x = 2,158,567,911.36
  5. Step 5: Solve for x
    x = 2,158,567,911.36/40,615.20
  6. Step 6: Final answer
    x = 53,146.80

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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.