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Finding the Fourth Proportional to 70,841.64, 105,426.15 and 68,479.32

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Solution

The fourth proportional to 70,841.64, 105,426.15 and 68,479.32 is: 101,910.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,841.64 : 105,426.15 = 68,479.32 : x
  2. Step 2: Convert to fraction form
    70,841.64/105,426.15 = 68,479.32/x
  3. Step 3: Cross multiply
    70,841.64x = 105,426.15 × 68,479.32
  4. Step 4: Simplify right side
    70,841.64x = 7,219,511,062.22
  5. Step 5: Solve for x
    x = 7,219,511,062.22/70,841.64
  6. Step 6: Final answer
    x = 101,910.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.