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Finding the Fourth Proportional to 72,232.52, 108,368.72 and 30,132.39

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Solution

The fourth proportional to 72,232.52, 108,368.72 and 30,132.39 is: 45,206.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,232.52 : 108,368.72 = 30,132.39 : x
  2. Step 2: Convert to fraction form
    72,232.52/108,368.72 = 30,132.39/x
  3. Step 3: Cross multiply
    72,232.52x = 108,368.72 × 30,132.39
  4. Step 4: Simplify right side
    72,232.52x = 3,265,408,384.18
  5. Step 5: Solve for x
    x = 3,265,408,384.18/72,232.52
  6. Step 6: Final answer
    x = 45,206.90

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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.