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Finding the Fourth Proportional to 71,378.34, 98,457.54 and 45,917.94

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Solution

The fourth proportional to 71,378.34, 98,457.54 and 45,917.94 is: 63,338.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,378.34 : 98,457.54 = 45,917.94 : x
  2. Step 2: Convert to fraction form
    71,378.34/98,457.54 = 45,917.94/x
  3. Step 3: Cross multiply
    71,378.34x = 98,457.54 × 45,917.94
  4. Step 4: Simplify right side
    71,378.34x = 4,520,967,414.27
  5. Step 5: Solve for x
    x = 4,520,967,414.27/71,378.34
  6. Step 6: Final answer
    x = 63,338.09

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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.