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Finding the Fourth Proportional to 72,334.60, 108,427.58 and 30,239.30

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Solution

The fourth proportional to 72,334.60, 108,427.58 and 30,239.30 is: 45,327.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,334.60 : 108,427.58 = 30,239.30 : x
  2. Step 2: Convert to fraction form
    72,334.60/108,427.58 = 30,239.30/x
  3. Step 3: Cross multiply
    72,334.60x = 108,427.58 × 30,239.30
  4. Step 4: Simplify right side
    72,334.60x = 3,278,774,119.89
  5. Step 5: Solve for x
    x = 3,278,774,119.89/72,334.60
  6. Step 6: Final answer
    x = 45,327.88

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1.5x scale

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.