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Finding the Fourth Proportional to 75,379.15, 112,904.70 and 45,745.30

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Solution

The fourth proportional to 75,379.15, 112,904.70 and 45,745.30 is: 68,518.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,379.15 : 112,904.70 = 45,745.30 : x
  2. Step 2: Convert to fraction form
    75,379.15/112,904.70 = 45,745.30/x
  3. Step 3: Cross multiply
    75,379.15x = 112,904.70 × 45,745.30
  4. Step 4: Simplify right side
    75,379.15x = 5,164,859,372.91
  5. Step 5: Solve for x
    x = 5,164,859,372.91/75,379.15
  6. Step 6: Final answer
    x = 68,518.41

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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.