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Finding the Fourth Proportional to 84,863.64, 117,115.53 and 47,137.89

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Solution

The fourth proportional to 84,863.64, 117,115.53 and 47,137.89 is: 65,052.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,863.64 : 117,115.53 = 47,137.89 : x
  2. Step 2: Convert to fraction form
    84,863.64/117,115.53 = 47,137.89/x
  3. Step 3: Cross multiply
    84,863.64x = 117,115.53 × 47,137.89
  4. Step 4: Simplify right side
    84,863.64x = 5,520,578,970.43
  5. Step 5: Solve for x
    x = 5,520,578,970.43/84,863.64
  6. Step 6: Final answer
    x = 65,052.35

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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.