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Finding the Fourth Proportional to 85,431.01, 117,894.32 and 47,193.19

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Solution

The fourth proportional to 85,431.01, 117,894.32 and 47,193.19 is: 65,126.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,431.01 : 117,894.32 = 47,193.19 : x
  2. Step 2: Convert to fraction form
    85,431.01/117,894.32 = 47,193.19/x
  3. Step 3: Cross multiply
    85,431.01x = 117,894.32 × 47,193.19
  4. Step 4: Simplify right side
    85,431.01x = 5,563,809,043.68
  5. Step 5: Solve for x
    x = 5,563,809,043.68/85,431.01
  6. Step 6: Final answer
    x = 65,126.34

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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.