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Finding the Fourth Proportional to 70,272.57, 96,942.65 and 43,405.41

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Solution

The fourth proportional to 70,272.57, 96,942.65 and 43,405.41 is: 59,878.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,272.57 : 96,942.65 = 43,405.41 : x
  2. Step 2: Convert to fraction form
    70,272.57/96,942.65 = 43,405.41/x
  3. Step 3: Cross multiply
    70,272.57x = 96,942.65 × 43,405.41
  4. Step 4: Simplify right side
    70,272.57x = 4,207,835,252.71
  5. Step 5: Solve for x
    x = 4,207,835,252.71/70,272.57
  6. Step 6: Final answer
    x = 59,878.77

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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.