Home / 35,420.80-53,067.20-20,617.60

Finding the Fourth Proportional to 35,420.80, 53,067.20 and 20,617.60

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Solution

The fourth proportional to 35,420.80, 53,067.20 and 20,617.60 is: 30,889.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,420.80 : 53,067.20 = 20,617.60 : x
  2. Step 2: Convert to fraction form
    35,420.80/53,067.20 = 20,617.60/x
  3. Step 3: Cross multiply
    35,420.80x = 53,067.20 × 20,617.60
  4. Step 4: Simplify right side
    35,420.80x = 1,094,118,302.72
  5. Step 5: Solve for x
    x = 1,094,118,302.72/35,420.80
  6. Step 6: Final answer
    x = 30,889.15

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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.