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Finding the Fourth Proportional to 72,086.40, 108,066.96 and 34,627.68

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Solution

The fourth proportional to 72,086.40, 108,066.96 and 34,627.68 is: 51,911.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,086.40 : 108,066.96 = 34,627.68 : x
  2. Step 2: Convert to fraction form
    72,086.40/108,066.96 = 34,627.68/x
  3. Step 3: Cross multiply
    72,086.40x = 108,066.96 × 34,627.68
  4. Step 4: Simplify right side
    72,086.40x = 3,742,108,109.45
  5. Step 5: Solve for x
    x = 3,742,108,109.45/72,086.40
  6. Step 6: Final answer
    x = 51,911.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.