Home / 85,379.12-117,820.32-47,138.03

Finding the Fourth Proportional to 85,379.12, 117,820.32 and 47,138.03

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Solution

The fourth proportional to 85,379.12, 117,820.32 and 47,138.03 is: 65,048.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,379.12 : 117,820.32 = 47,138.03 : x
  2. Step 2: Convert to fraction form
    85,379.12/117,820.32 = 47,138.03/x
  3. Step 3: Cross multiply
    85,379.12x = 117,820.32 × 47,138.03
  4. Step 4: Simplify right side
    85,379.12x = 5,553,817,778.77
  5. Step 5: Solve for x
    x = 5,553,817,778.77/85,379.12
  6. Step 6: Final answer
    x = 65,048.90

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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.