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Finding the Fourth Proportional to 72,376.84, 108,404.86 and 55,613.48

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Solution

The fourth proportional to 72,376.84, 108,404.86 and 55,613.48 is: 83,296.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,376.84 : 108,404.86 = 55,613.48 : x
  2. Step 2: Convert to fraction form
    72,376.84/108,404.86 = 55,613.48/x
  3. Step 3: Cross multiply
    72,376.84x = 108,404.86 × 55,613.48
  4. Step 4: Simplify right side
    72,376.84x = 6,028,771,513.51
  5. Step 5: Solve for x
    x = 6,028,771,513.51/72,376.84
  6. Step 6: Final answer
    x = 83,296.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.