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Finding the Fourth Proportional to 72,373.91, 108,588.20 and 28,003.32

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Solution

The fourth proportional to 72,373.91, 108,588.20 and 28,003.32 is: 42,015.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,373.91 : 108,588.20 = 28,003.32 : x
  2. Step 2: Convert to fraction form
    72,373.91/108,588.20 = 28,003.32/x
  3. Step 3: Cross multiply
    72,373.91x = 108,588.20 × 28,003.32
  4. Step 4: Simplify right side
    72,373.91x = 3,040,829,972.81
  5. Step 5: Solve for x
    x = 3,040,829,972.81/72,373.91
  6. Step 6: Final answer
    x = 42,015.56

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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.