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Finding the Fourth Proportional to 85,451.58, 117,873.90 and 51,436.44

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Solution

The fourth proportional to 85,451.58, 117,873.90 and 51,436.44 is: 70,952.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,451.58 : 117,873.90 = 51,436.44 : x
  2. Step 2: Convert to fraction form
    85,451.58/117,873.90 = 51,436.44/x
  3. Step 3: Cross multiply
    85,451.58x = 117,873.90 × 51,436.44
  4. Step 4: Simplify right side
    85,451.58x = 6,063,013,784.92
  5. Step 5: Solve for x
    x = 6,063,013,784.92/85,451.58
  6. Step 6: Final answer
    x = 70,952.62

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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.