Home / 75,408.76-113,011.08-28,636.12

Finding the Fourth Proportional to 75,408.76, 113,011.08 and 28,636.12

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Solution

The fourth proportional to 75,408.76, 113,011.08 and 28,636.12 is: 42,915.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,408.76 : 113,011.08 = 28,636.12 : x
  2. Step 2: Convert to fraction form
    75,408.76/113,011.08 = 28,636.12/x
  3. Step 3: Cross multiply
    75,408.76x = 113,011.08 × 28,636.12
  4. Step 4: Simplify right side
    75,408.76x = 3,236,198,848.21
  5. Step 5: Solve for x
    x = 3,236,198,848.21/75,408.76
  6. Step 6: Final answer
    x = 42,915.42

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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.