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Finding the Fourth Proportional to 68,400.32, 102,636.58 and 48,538.16

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Solution

The fourth proportional to 68,400.32, 102,636.58 and 48,538.16 is: 72,832.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,400.32 : 102,636.58 = 48,538.16 : x
  2. Step 2: Convert to fraction form
    68,400.32/102,636.58 = 48,538.16/x
  3. Step 3: Cross multiply
    68,400.32x = 102,636.58 × 48,538.16
  4. Step 4: Simplify right side
    68,400.32x = 4,981,790,741.89
  5. Step 5: Solve for x
    x = 4,981,790,741.89/68,400.32
  6. Step 6: Final answer
    x = 72,832.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.