Home / 75,305.21-112,890.69-28,590.89

Finding the Fourth Proportional to 75,305.21, 112,890.69 and 28,590.89

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Solution

The fourth proportional to 75,305.21, 112,890.69 and 28,590.89 is: 42,860.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,305.21 : 112,890.69 = 28,590.89 : x
  2. Step 2: Convert to fraction form
    75,305.21/112,890.69 = 28,590.89/x
  3. Step 3: Cross multiply
    75,305.21x = 112,890.69 × 28,590.89
  4. Step 4: Simplify right side
    75,305.21x = 3,227,644,735.36
  5. Step 5: Solve for x
    x = 3,227,644,735.36/75,305.21
  6. Step 6: Final answer
    x = 42,860.85

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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.