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Finding the Fourth Proportional to 72,636, 100,243.15 and 44,347.16

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Solution

The fourth proportional to 72,636, 100,243.15 and 44,347.16 is: 61,202.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,636 : 100,243.15 = 44,347.16 : x
  2. Step 2: Convert to fraction form
    72,636/100,243.15 = 44,347.16/x
  3. Step 3: Cross multiply
    72,636x = 100,243.15 × 44,347.16
  4. Step 4: Simplify right side
    72,636x = 4,445,498,399.87
  5. Step 5: Solve for x
    x = 4,445,498,399.87/72,636
  6. Step 6: Final answer
    x = 61,202.41

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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.