Home / 75,615.90-113,351.85-28,218.30

Finding the Fourth Proportional to 75,615.90, 113,351.85 and 28,218.30

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Solution

The fourth proportional to 75,615.90, 113,351.85 and 28,218.30 is: 42,300.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,615.90 : 113,351.85 = 28,218.30 : x
  2. Step 2: Convert to fraction form
    75,615.90/113,351.85 = 28,218.30/x
  3. Step 3: Cross multiply
    75,615.90x = 113,351.85 × 28,218.30
  4. Step 4: Simplify right side
    75,615.90x = 3,198,596,508.86
  5. Step 5: Solve for x
    x = 3,198,596,508.86/75,615.90
  6. Step 6: Final answer
    x = 42,300.58

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1.5x scale

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.