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Finding the Fourth Proportional to 72,948.60, 100,674.90 and 41,120.46

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Solution

The fourth proportional to 72,948.60, 100,674.90 and 41,120.46 is: 56,749.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,948.60 : 100,674.90 = 41,120.46 : x
  2. Step 2: Convert to fraction form
    72,948.60/100,674.90 = 41,120.46/x
  3. Step 3: Cross multiply
    72,948.60x = 100,674.90 × 41,120.46
  4. Step 4: Simplify right side
    72,948.60x = 4,139,798,198.45
  5. Step 5: Solve for x
    x = 4,139,798,198.45/72,948.60
  6. Step 6: Final answer
    x = 56,749.52

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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.