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Finding the Fourth Proportional to 72,988.39, 100,724.00 and 41,157.30

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Solution

The fourth proportional to 72,988.39, 100,724.00 and 41,157.30 is: 56,797.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,988.39 : 100,724.00 = 41,157.30 : x
  2. Step 2: Convert to fraction form
    72,988.39/100,724.00 = 41,157.30/x
  3. Step 3: Cross multiply
    72,988.39x = 100,724.00 × 41,157.30
  4. Step 4: Simplify right side
    72,988.39x = 4,145,527,606.31
  5. Step 5: Solve for x
    x = 4,145,527,606.31/72,988.39
  6. Step 6: Final answer
    x = 56,797.08

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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.