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Finding the Fourth Proportional to 72,739.81, 100,347.04 and 47,244.37

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Solution

The fourth proportional to 72,739.81, 100,347.04 and 47,244.37 is: 65,175.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,739.81 : 100,347.04 = 47,244.37 : x
  2. Step 2: Convert to fraction form
    72,739.81/100,347.04 = 47,244.37/x
  3. Step 3: Cross multiply
    72,739.81x = 100,347.04 × 47,244.37
  4. Step 4: Simplify right side
    72,739.81x = 4,740,832,686.16
  5. Step 5: Solve for x
    x = 4,740,832,686.16/72,739.81
  6. Step 6: Final answer
    x = 65,175.21

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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.