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Finding the Fourth Proportional to 75,745.80, 104,595.30 and 47,500.20

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Solution

The fourth proportional to 75,745.80, 104,595.30 and 47,500.20 is: 65,591.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,745.80 : 104,595.30 = 47,500.20 : x
  2. Step 2: Convert to fraction form
    75,745.80/104,595.30 = 47,500.20/x
  3. Step 3: Cross multiply
    75,745.80x = 104,595.30 × 47,500.20
  4. Step 4: Simplify right side
    75,745.80x = 4,968,297,669.06
  5. Step 5: Solve for x
    x = 4,968,297,669.06/75,745.80
  6. Step 6: Final answer
    x = 65,591.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.