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Finding the Fourth Proportional to 85,245.48, 117,645.16 and 49,435.16

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Solution

The fourth proportional to 85,245.48, 117,645.16 and 49,435.16 is: 68,224.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,245.48 : 117,645.16 = 49,435.16 : x
  2. Step 2: Convert to fraction form
    85,245.48/117,645.16 = 49,435.16/x
  3. Step 3: Cross multiply
    85,245.48x = 117,645.16 × 49,435.16
  4. Step 4: Simplify right side
    85,245.48x = 5,815,807,307.83
  5. Step 5: Solve for x
    x = 5,815,807,307.83/85,245.48
  6. Step 6: Final answer
    x = 68,224.23

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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.