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Finding the Fourth Proportional to 72,157.37, 108,177.71 and 30,069.15

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Solution

The fourth proportional to 72,157.37, 108,177.71 and 30,069.15 is: 45,079.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,157.37 : 108,177.71 = 30,069.15 : x
  2. Step 2: Convert to fraction form
    72,157.37/108,177.71 = 30,069.15/x
  3. Step 3: Cross multiply
    72,157.37x = 108,177.71 × 30,069.15
  4. Step 4: Simplify right side
    72,157.37x = 3,252,811,638.30
  5. Step 5: Solve for x
    x = 3,252,811,638.30/72,157.37
  6. Step 6: Final answer
    x = 45,079.41

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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.