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Finding the Fourth Proportional to 72,244.35, 99,701.01 and 40,412.43

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Solution

The fourth proportional to 72,244.35, 99,701.01 and 40,412.43 is: 55,771.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,244.35 : 99,701.01 = 40,412.43 : x
  2. Step 2: Convert to fraction form
    72,244.35/99,701.01 = 40,412.43/x
  3. Step 3: Cross multiply
    72,244.35x = 99,701.01 × 40,412.43
  4. Step 4: Simplify right side
    72,244.35x = 4,029,160,087.55
  5. Step 5: Solve for x
    x = 4,029,160,087.55/72,244.35
  6. Step 6: Final answer
    x = 55,771.28

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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.