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Finding the Fourth Proportional to 50,920.40, 76,408.44 and 19,756.88

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Solution

The fourth proportional to 50,920.40, 76,408.44 and 19,756.88 is: 29,646.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,920.40 : 76,408.44 = 19,756.88 : x
  2. Step 2: Convert to fraction form
    50,920.40/76,408.44 = 19,756.88/x
  3. Step 3: Cross multiply
    50,920.40x = 76,408.44 × 19,756.88
  4. Step 4: Simplify right side
    50,920.40x = 1,509,592,380.07
  5. Step 5: Solve for x
    x = 1,509,592,380.07/50,920.40
  6. Step 6: Final answer
    x = 29,646.12

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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.