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Finding the Fourth Proportional to 72,908.14, 100,613.22 and 39,374.14

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Solution

The fourth proportional to 72,908.14, 100,613.22 and 39,374.14 is: 54,336.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,908.14 : 100,613.22 = 39,374.14 : x
  2. Step 2: Convert to fraction form
    72,908.14/100,613.22 = 39,374.14/x
  3. Step 3: Cross multiply
    72,908.14x = 100,613.22 × 39,374.14
  4. Step 4: Simplify right side
    72,908.14x = 3,961,559,010.13
  5. Step 5: Solve for x
    x = 3,961,559,010.13/72,908.14
  6. Step 6: Final answer
    x = 54,336.31

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1.5x scale

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.