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Finding the Fourth Proportional to 72,506.97, 100,052.69 and 40,673.97

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Solution

The fourth proportional to 72,506.97, 100,052.69 and 40,673.97 is: 56,126.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,506.97 : 100,052.69 = 40,673.97 : x
  2. Step 2: Convert to fraction form
    72,506.97/100,052.69 = 40,673.97/x
  3. Step 3: Cross multiply
    72,506.97x = 100,052.69 × 40,673.97
  4. Step 4: Simplify right side
    72,506.97x = 4,069,539,908.11
  5. Step 5: Solve for x
    x = 4,069,539,908.11/72,506.97
  6. Step 6: Final answer
    x = 56,126.19

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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.