Home / 75,564.80-113,390.40-28,851.20

Finding the Fourth Proportional to 75,564.80, 113,390.40 and 28,851.20

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Solution

The fourth proportional to 75,564.80, 113,390.40 and 28,851.20 is: 43,293.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,564.80 : 113,390.40 = 28,851.20 : x
  2. Step 2: Convert to fraction form
    75,564.80/113,390.40 = 28,851.20/x
  3. Step 3: Cross multiply
    75,564.80x = 113,390.40 × 28,851.20
  4. Step 4: Simplify right side
    75,564.80x = 3,271,449,108.48
  5. Step 5: Solve for x
    x = 3,271,449,108.48/75,564.80
  6. Step 6: Final answer
    x = 43,293.29

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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.