Home / 83,421.20-125,109.90-30,845.72

Finding the Fourth Proportional to 83,421.20, 125,109.90 and 30,845.72

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Solution

The fourth proportional to 83,421.20, 125,109.90 and 30,845.72 is: 46,260.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,421.20 : 125,109.90 = 30,845.72 : x
  2. Step 2: Convert to fraction form
    83,421.20/125,109.90 = 30,845.72/x
  3. Step 3: Cross multiply
    83,421.20x = 125,109.90 × 30,845.72
  4. Step 4: Simplify right side
    83,421.20x = 3,859,104,944.63
  5. Step 5: Solve for x
    x = 3,859,104,944.63/83,421.20
  6. Step 6: Final answer
    x = 46,260.48

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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.