Home / 85,441.72-117,909.18-47,201.28

Finding the Fourth Proportional to 85,441.72, 117,909.18 and 47,201.28

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Solution

The fourth proportional to 85,441.72, 117,909.18 and 47,201.28 is: 65,137.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,441.72 : 117,909.18 = 47,201.28 : x
  2. Step 2: Convert to fraction form
    85,441.72/117,909.18 = 47,201.28/x
  3. Step 3: Cross multiply
    85,441.72x = 117,909.18 × 47,201.28
  4. Step 4: Simplify right side
    85,441.72x = 5,565,463,630.20
  5. Step 5: Solve for x
    x = 5,565,463,630.20/85,441.72
  6. Step 6: Final answer
    x = 65,137.55

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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.