Home / 85,534.20-128,264.60-29,379.96

Finding the Fourth Proportional to 85,534.20, 128,264.60 and 29,379.96

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Solution

The fourth proportional to 85,534.20, 128,264.60 and 29,379.96 is: 44,057.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,534.20 : 128,264.60 = 29,379.96 : x
  2. Step 2: Convert to fraction form
    85,534.20/128,264.60 = 29,379.96/x
  3. Step 3: Cross multiply
    85,534.20x = 128,264.60 × 29,379.96
  4. Step 4: Simplify right side
    85,534.20x = 3,768,408,890.87
  5. Step 5: Solve for x
    x = 3,768,408,890.87/85,534.20
  6. Step 6: Final answer
    x = 44,057.33

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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.