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Finding the Fourth Proportional to 72,662.63, 100,274.96 and 39,957.62

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Solution

The fourth proportional to 72,662.63, 100,274.96 and 39,957.62 is: 55,141.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,662.63 : 100,274.96 = 39,957.62 : x
  2. Step 2: Convert to fraction form
    72,662.63/100,274.96 = 39,957.62/x
  3. Step 3: Cross multiply
    72,662.63x = 100,274.96 × 39,957.62
  4. Step 4: Simplify right side
    72,662.63x = 4,006,748,747.20
  5. Step 5: Solve for x
    x = 4,006,748,747.20/72,662.63
  6. Step 6: Final answer
    x = 55,141.81

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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.