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Finding the Fourth Proportional to 72,617.36, 108,932.72 and 28,247.44

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Solution

The fourth proportional to 72,617.36, 108,932.72 and 28,247.44 is: 42,373.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,617.36 : 108,932.72 = 28,247.44 : x
  2. Step 2: Convert to fraction form
    72,617.36/108,932.72 = 28,247.44/x
  3. Step 3: Cross multiply
    72,617.36x = 108,932.72 × 28,247.44
  4. Step 4: Simplify right side
    72,617.36x = 3,077,070,472.24
  5. Step 5: Solve for x
    x = 3,077,070,472.24/72,617.36
  6. Step 6: Final answer
    x = 42,373.76

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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.