Home / 75,622.80-113,477.40-28,909.20

Finding the Fourth Proportional to 75,622.80, 113,477.40 and 28,909.20

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Solution

The fourth proportional to 75,622.80, 113,477.40 and 28,909.20 is: 43,380.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,622.80 : 113,477.40 = 28,909.20 : x
  2. Step 2: Convert to fraction form
    75,622.80/113,477.40 = 28,909.20/x
  3. Step 3: Cross multiply
    75,622.80x = 113,477.40 × 28,909.20
  4. Step 4: Simplify right side
    75,622.80x = 3,280,540,852.08
  5. Step 5: Solve for x
    x = 3,280,540,852.08/75,622.80
  6. Step 6: Final answer
    x = 43,380.31

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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.