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Finding the Fourth Proportional to 71,079.62, 98,095.64 and 40,874.72

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Solution

The fourth proportional to 71,079.62, 98,095.64 and 40,874.72 is: 56,410.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,079.62 : 98,095.64 = 40,874.72 : x
  2. Step 2: Convert to fraction form
    71,079.62/98,095.64 = 40,874.72/x
  3. Step 3: Cross multiply
    71,079.62x = 98,095.64 × 40,874.72
  4. Step 4: Simplify right side
    71,079.62x = 4,009,631,123.37
  5. Step 5: Solve for x
    x = 4,009,631,123.37/71,079.62
  6. Step 6: Final answer
    x = 56,410.42

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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.